a. What current is flowing in a 2.0m length of wire in the Earth's field of 55μT if it experiences a force of 10mN? b. A 2 wire cable is suppling 100 A to a DC motor. Each wire has
38,769 results
KUSSSESSS
Consider a wire of length L = 0.30 m that runs northsouth on a horizontal surface. There is a current of I = 0.50 A flowing north in the wire. (The rest of the circuit, which actually delivers this current, is not shown.) The Earth's magnetic field at

science
Which of the following would decrease the magnetic field around a wire? A) Decreasing the current (MY ANSWER) B) reversing the poles of the wire C) looping a section of the wire into a solenoid D) increasing the current

Physics
In Oersted's experiment, suppose that the compass was 0.30 m from the currentcarrying wire. If a magnetic field of 1/3 the Earth's magnetic field of 5 10−5 T was required to give a noticeable deflection of the compass needle, what current must the wire

Physics
To construct a solenoid, you wrap insulated wire uniformly around a plastic tube 12 cm in diameter and 45 cm in length. You would like a 2.0A current to produce a 2.1kG magnetic field inside your solenoid. What is the total length of wire you will need

physic
A long straight horizontal wire carries a current = 3.90 A to the left. A positive 1.00 C charge moves to the right at a distance 1.50 m above the wire at constant speed v = 5000 m/s. What is the magnitude of the magnetic field at the location of the

physics
The magnitude of the magnetic field produced by a long straight currentcarrying wire is: proportional to both the current in the wire and the distance from the wire proportional to the current in the wire and inversely proportional to the distance from

Physics
A long, straight wire carrying a current of 317 A is placed in a uniform magnetic field that has a magnitude of 7.69 × 103 T. The wire is perpendicular to the field. Find a point in space where the net magnetic field is zero. Locate this point by

Physics
1)A currentcarrying conductor is kept at right angles to the direction of a magnetic field. What happens to the force acting on the wire if the strength of the magnetic field doubles? the force is doubled. 2)How much current is required to produce a force

physics
2.4 ampere current is flowing in a wire .how many electrons pass a given point in the wire in one second if the charge on an electron is 1.6x10 power 19 couloms.

physics
A wire of length 0.655m carries a current of 21.0A. In the presence of a 0.470T magnetic field, the wire experiences a force of 5.46N. What is the angle (less than 90degrees) between the wire and the magnetic field？ I NEED HELP WITH THIS

Physics
Suppose a straight 1.60mm diameter copper wire could just "float" horizontally in air because of the force due to the Earth's magnetic field B⃗ , which is horizontal, perpendicular to the wire, and of magnitude 4.2×10−5T . What current would the wire

Physics
The force on a 0.80 m wire that is perpendicular to Earth's magnetic field is 0.12 N. What is the current in the wire?

Physics
Suppose a straight 1.25 mm diameter copper wire could just "float" horizontally in air because of the force of the Earth's magnetic field B, which is horizontal, perpendicular to the wire, and of magnitude 5.00 multiplied by 105 T. What current would the

college physics
A long, straight, cylindrical wire of radius R carries a current uniformly distributed over its cross section. 1. At what location is the magnetic field produced by this current equal to quarter of its largest value? Consider points inside the wire. 2.At

Physics
A small compass is held horizontally, the center of its needle a distance of 0.460 m directly north of a long wire that is perpendicular to the earth's surface. When there is no current in the wire, the compass needle points due north, which is the

Physics
The force on a wire is a maximum of 6.5E2 N when placed between the pole faces of a magnet. The current flows horizontally to the right and the magnetic field is vertical. The wire is observed to "jump" toward the observer when the current is turned on.

Physics
An infinite straight wire carrying a current I=5 A flowing to the right is placed above a rectangular loop of wire with width w=11 cm and length L=27 cm, as shown in the figure below. The distance from the infinite wire to the closest side of the rectangle

physics
A long, straight wire lies on a horizontal table and carries a current of 3.05 µA. In a vacuum, a proton moves parallel to the wire (opposite the current) with a constant speed of 3.00 104 m/s at a distance d above the wire. Ignoring the magnetic field

Physics 2
A wire has a length of 4.52 x 102 m and is used to make a circular coil of one turn. There is a current of 7.94 A in the wire. In the presence of a 8.04T magnetic field, what is the maximum torque that this coil can experience?

Physics help
1. if the magnetic field is 2.1 m from a current carrying wire is 7.1x10^5 T, what is the current flowing through the wire? 2. The electromagnet in an MRI has a magnetic field of 2.5 T. If there are 100 A of current running through the magnet, how many

Physics
An aluminum wire with mass/unit length of p = 5*10^4 kg/m lies on the ground, running eastwest. The wire feels the earth's magnetic field, which has magnitude B = 5*10^5 T. Assume the wire is in Columbia, where the Earth's magnetic field runs due north,

Physics
A 45m length of wire is stretched horizontally between two vertical posts. The wire carries a current of 67 A and experiences a magnetic force of 0.15 N. Find the magnitude of the earth's magnetic field at the location of the wire, assuming the field

Physics
A small compass is held horizontally and the centre of its needle is at the distance of 0.280 m directly north of the long wire that is perpendicular to the earth’s surface as in FIGURE 1. When there is no current in the wire, the compass needle points

PHYSICS
A long, straight wire lies on a horizontal table and carries a current of 1.45 µA. In a vacuum, a proton moves parallel to the wire (opposite the current) with a constant speed of 3.00 104 m/s at a distance d above the wire. Determine the value of d.

physics
The force on a wire is a maximum of 7.33E2 N when placed between the pole faces of a magnet. The current flows horizontally to the right and the magnetic field is vertical. The wire is observed to "jump" toward the observer when the current is turned on.

Physics
In 1996, NASA performed an experiment called the Tethered Satellite experiment. In this experiment a 2.20 104m length of wire was let out by the space shuttle Atlantis to generate a motional emf. The shuttle had an orbital speed of 7.50 103 m/s, and the

Physics
A currentcarrying wire is oriented at right angles to a uniform magnetic field. If the length of the wire is 0.50 m and it experiences a force of 0.90 N while carrying a current of 4.0 A, what is the strength of the magnetic field? I did the work and got:

Physics
Two straight and parallel wires of length 1.0 m carry a current  the first carries a currecnt of 9.0 A while the other wire carries a current of 4.0 A. What distance must separate the two straight and parallel copper wires if the force between them is to

Physics IMP pls
An infinitely long wire carrying a current of 2 A is bent at a right angle as shown in the Figure. What is the magnetic field magnitude in Tesla a point P, 10 cm from the corner? I can not draw pic here but I will try to describe it: Point P is in right

Physics IMP
An infinitely long wire carrying a current of 2 A is bent at a right angle as shown in the Figure. What is the magnetic field magnitude in Tesla a point P, 10 cm from the corner? I can not draw pic here but I will try to describe it: Point P is in right

11th grade Physics
A long,straight currentcarrying wire runs from north to south. A) A compass needle placed above the wire points with its Npole toward the east. In what direction is the current flowing? B) If a compass is put underneath the wire, which direction will the

College physics
The magnetic field at the center of a 0.70cmdiameter loop is 2.4 mT. What is the current in the loop? A long straight wire carries the same current you found in part a. At what distance from the wire is the magnetic field 2.4 mT?

physics
A horizontal, straight wire carrying 12 A current from east to west is in the earth's magnetic field B. At this place, B is parallel to the surface of the earth, points north and its magnitude is 0.04mT. Determine the Magnetic Force on 1 m length of wire.

physics
A horizontal ,straight wire carying 12.0A current from west to east is in the earth's magnetic field B.At this place,B is parallel to the surface of the earth ,points to the north and its magnitude is 0.04mT.Determine the magnetic force on 1m length of the

Physics
A highvoltage line of length 175 m is carrying a current of 105 A at a point on the earth where its magnetic field is 5 * 10^(5) T and points North,34 degree from the vertical axis. A) what is the magnitude and direction of the force on the wire if the

physics
A highvoltage line of length 175 m is carrying a current of 105 A at a point on the earth where its magnetic field is 5 * 10^(5) T and points North,34 degree from the vertical axis. A) what is the magnitude and direction of the force on the wire if the

Electrical principles
a. What current is flowing in a 2.0m length of wire in the Earth's field of 55μT if it experiences a force of 10mN? b. A 2 wire cable is suppling 100 A to a DC motor. Each wire has a 2 mm insulation layer and there is also a 2 mm separate insulation layer

Physics
Would someone check this please? A circular loop of wire of radius 0.10 m and of resistance 2.0 ~ 10−3 ƒ¶ is in a region where there is a uniform magnetic field B. The field is at 30‹ to the normal to the plane of the wire loop as shown in Figure

Physics
An infinite straight wire carrying a current I=5 A flowing to the right is placed above a rectangular loop of wire with width w=11 cm and length L=27 cm, as shown in the figure below. The distance from the infinite wire to the closest side of the rectangle

Physics
Would someone check this please? A circular loop of wire of radius 0.10 m and of resistance 2.0 x 10^−3 ohms is in a region where there is a uniform magnetic field B. The field is at 30deg to the normal to the plane of the wire loop as shown in Figure 3.

Physics
Would someone check this please? A circular loop of wire of radius 0.10 m and of resistance 2.0 x 10^−3 ohms is in a region where there is a uniform magnetic field B. The field is at 30deg to the normal to the plane of the wire loop as shown in Figure 3.

physics
An infinitelylong wire with resistivity 2.0*10^8 ohm*m initially has 1.5 A of "conduction" current flowing through it. When the emf connected to the wire is turned off, this current stops in time of .6ns. Estimate the amount of displacement current

physics
A highvoltage power line carries a current of 120 A at a location where the Earth's magnetic field has a magnitude of 0.577 G and points to the north, 70.8° below the horizontal. Calculate the magnitude of the magnetic force exerted on a 258 m length of

physics
A wire of length 11 cm carries a current of 1.1 A. When the wire is placed so that the current passes through the wire along the positive x direction, the force on the wire due to an external magnetic field B is measured to be (0.04 N)j. When the wire is

PHYSICS
A longstraight wire carries a current and is aligned with the NorthSouth direction. You place a compass 4 cm directly above the wire and above the North/East/South/West plane. The compass needle, which initially pointed North (far away from the wire) is

physics
A long, straight wire has a 12.1 A current flowing in the positive xdirection, as shown in the figure. Close to the wire is a square loop of copper wire that carries a 2.23 A current in the direction shown. The near side of the loop is d = 57.1 cm away

physics
A straight horizontal wire carries a current of 3.55 μA. A proton is moving above the wire in a direction parallel to it but opposite to the direction of the conventional current in the wire, at a constant velocity of 8.00×106 m/s. Assume that the force

Physics
Help please A wire carries a current of 5.2 A from east to west through a 6.0 m section of wire in the earth's magnetic field of 1 × 10^5 T at a location where the magnetic field points south. What is the magnitude of the magnetic force acting on the

science
A thin straight wire carries a current of 10 mA and makes an angle of 60° with a constant magnetic field of magnitude 10^6 T. The portion of the wire in this field has a length of 10 cm. Calculate the magnitude of the force on this segment of the wire

Physics
A thin straight wire carries a current of 10 mA and makes an angle of 60° with a constant magnetic field of magnitude 10^6 T. The portion of the wire in this field has a length of 10 cm. Calculate the magnitude of the force on this segment of the wire

physics
A wire of length 0.655 m carries a current of 21.0 A. In the presence of a 0.470T magnetic field, the wire experiences a force of 5.46 N. What is the angle (less than 90°) between the wire and the magnetic field?

physics
A uniform horizontal wire with a linear mass density of 0.48 g/m carries a 1.9 A current. It is placed in a constant magnetic field, with a strength of 3.5 103 T, that is horizontal and perpendicular to the wire. Neglect the magnetic field of the Earth.

physics
A 6 N force acts on a current carrying wire of length 0.5 m that is placed in a 1.5 T external magnetic field. What is the current in the wire?

Physics
Suppose a straight 1.50 mm diameter copper wire could just "float" horizontally in air because of the force due to the Earth's magnetic field B, which is horizontal, perpendicular to the wire, and of magnitude 3.0×10−5 T . What current would the wire

science
How large a current would a very long, straight wire have to carry so that the magnetic field 2 cm from the wire is equal to 1 G (comparable to the earth’s northwardpointing magnetic field)?

Physics
In 1996, NASA performed an experiment called the Tethered Satellite experiment. In this experiment a 2.20 104m length of wire was let out by the space shuttle Atlantis to generate a motional emf. The shuttle had an orbital speed of 7.50 103 m/s, and the

Physics
What is the direction of the net magnetic field at the point? I'll describe the figure here: Imagine a cartesian plane. At (0,y) is a wire carrying a current out of the screen. At (0, y)is a wire carrying identical current out of the screen. At (x, 0) is

Physics
A current of 21A is passed through a 20m length of two conducting wire placed 125 cm apart.Determine the force of attraction between the wires assuming the current is flowing in the direction

college physics
A 4m long copper wire has a diameter of 2mm and carries a current of 10A. Determine the ff: a. current density in the wire b. electric field c. potential difference between the ends of the wire d. resistance of the wire

Physics
A wire of radius R carries a nonuniform current: the current density, j, (current per unit area) varies as a function of distance r from the central axis of the wire according to j = j0(R/r) (and j = 0 outside the wire, of course). Find expressions for

Physics 2
The wire in the figure below carries a current of 13 A. Suppose that a second long, straight wire is placed right next to this wire. The current in the second wire is 26 A. Use Ampère's law to find the magnitude of the magnetic field at a distance of r =

Physics
The wire in the drawing carries a current of 13 A. Suppose that a second long, straight wire is placed right next to this wire. The current in the second wire is 28 A. Use Ampere's law to find the magnitude of the magnetic field at a distance of r = 0.76 m

Physics 2
The wire in the figure below carries a current of 12 A. Suppose that a second long, straight wire is placed right next to this wire. The current in the second wire is 30 A. Use Ampère's law to find the magnitude of the magnetic field at a distance of r =

Physics 2
The wire in the figure below carries a current of 13 A. Suppose that a second long, straight wire is placed right next to this wire. The current in the second wire is 26 A. Use Ampère's law to find the magnitude of the magnetic field at a distance of r =

Physics
The wire in the drawing carries a current of 14 A. Suppose that a second long, straight wire is placed right next to this wire. The current in the second wire is 33 A. Use Ampere's law to find the magnitude of the magnetic field at a distance of r = 1.0 m

physics
copper has 8.5 x 10^28 electrons per cubic meter. (a) how many electrons are there in 30 cm length a 12 gauge copper wire (diameter 2.05 mm)? (b) if a current of 1.55 A is flowing in the wire, what is the average drift speed of the electrons along the

physics
A 42 mT magnetic field points due west. If a proton of kinetic energy 9x10E12 J enters this field in an upward direction, find the magnetic force acting on the proton in magnitude and direction. What magnetic force would an electron experience due to

Physics
A straight wire segment is placed in a region known to contain a constant magnetic field of unknown strength. A current of 6 A runs through the wire, which can be turned in various directions until the force per unit length acting on it takes on a maximum

physics
the magnitude of earths magnetic field at the magnetic north pole is 61/1000000.(a) determine the magnitude of the dipole moment of the earth (b)suppose an additional field due to the current in wire around the equator is used to make the net field at the

physics 8b
A piece of wire with mass per unit length 88 g/m runs horizontally at right angles to a horizontal magnetic field. A 6.5A current in the wire results in its being suspended against gravity. What is the magnetic field strength? Express your answer using two

Physics
Help me with this please A 6.0 m section of wire carries a current of 5.2 A from east to west in the earth's magnetic field of 1.0 × 10^5 T at a location where the magnetic field points south. In which direction does the magnetic force act on the wire?

Physics IMP
An infinitely long wire carrying a current of 2 A is bent at a right angle as shown in the Figure. What is the magnetic field magnitude in Tesla a point P, 10 cm from the corner? I can not draw pic here but I will try to describe it: Point P is in right

p
A square ammeter has sides of length l = 3.75 cm. The sides of the ammeter are capable of measuring the magnetic field they are subject to. When the ammeter is clamped around a wire carrying a DC current, as shown in the figure, the average value of the

Physics 
Q.1. Two wires each of length 40 m and diameter 2.6 mm, are connected in series. A potential difference of 50 V is applied between the ends of the composite wire. The resistances the wires are 0.13 Ω and 0.75 Ω, respectively. Determine: i) the current

college physics
A current of 2.7 A flows in a straight wire segment of length (2.5 cm) ˆı + (2.5 cm) ˆ in a uniform magnetic field of strength (1.7 T) ˆı . Find the magnitude of the force on the wire.

Physics
A 3 m long wire carrying a current of 1 A through a magnetic field of magnitude 17 T experiences a force of 8 kN entirely due to the current passing through the magnetic field. what angle does the wire make with the magnetic field?

Physics
Two current carrying wires cross at right angles as indicated in the figure. If the wires are not restrained, what statement best describes the motion of the wires? Hint: To help you visualize the situation, draw first the magnetic field that Wire 1 makes

Physics
The Earth has an electric field with magnitude roughly 100 N/C at its surface. A) Assuming there is a point charge at the earth's center creating this field, how much charge does the earth posses? Treat the earth as a sphere of radius 6.37 * 10^6 m. B)As

Physics
A wire carrying a 20.0–A current passes between the poles of a strong magnet that is perpendicular to its field and experiences a 2.47–N force on the 3.10 cm of wire in the field. What is the average field strength?

Physics current directions
I need help In studying the cross section of a straight current carrying wire, you notice that the magnetic field lines run counterclockwise. What is the direction of the current in the wire and how do you know? 2. You are looking into a current carrying

Physics current directions
I need help In studying the cross section of a straight current carrying wire, you notice that the magnetic field lines run counterclockwise. What is the direction of the current in the wire and how do you know? 2. You are looking into a current carrying

physics
A wire of length 20 cm and carrying a current of 2.5 A makes an angle of 30o with a magnetic field of strength 0.8 T. Calculate the magnitude of the force on the wire. My Working: F=BILSindeta F=0.8*2.5*0.2*sin30=0.2N is this correct?

physics
Two wires are made of the same material. The first wire dissipates power P with a current of I. If the second wire is 3 times as long and has twice the diameter, what will the current need to be through the second wire to dissipate the same power P as the

physics
A long straight vertical wire of diameter 2.0mm carries a steady current upwards. At 30mm from the centre of the wire, the magnetic field strength is 0.10mT. Sketch a graph to show the variation of magnetic field strength from the wire surface to a

physics
A long straight vertical wire of diameter 2.0mm carries a steady current upwards. At 30mm from the centre of the wire, the magnetic field strength is 0.10mT. Sketch a graph to show the variation of magnetic field strength from the wire surface to a

physics
A wire having mass per unit length of 0.440 g/cm carries a 2.80 A current horizontally to the south. What are the direction and magnitude of the minimum magnetic field needed to lift this wire vertically upward?

Physics
A current of 1.03 A flows in a wire. How many electrons are flowing past any point in the wire per second? The charge on one electron is 1.60 1019 C

Physics
Suppose that the magnetic field o fthe Earth were due to a single current moving in a circle of radius 2988 km through the earth’s molten core. The strength of the Earth’s magnetic field on the surface near a magnetic pole is about 6.00E5 T. About how

UTA
A vertical straight wire carrying an upward 35 current exerts an attractive force per unit length of 8.0×10−4 on a second parallel wire 7.5 away. What current (magnitude and direction) flows in the second wire?

Physics 2
A wire has a length of 4.52 x 102 m and is used to make a circular coil of one turn. There is a current of 7.94 A in the wire. In the presence of a 8.04T magnetic field, what is the maximum torque that this coil can experience?

Physics
A wire has a length of 5.40 102 m and is used to make a circular coil of one turn. There is a current of 2.30 A in the wire. In the presence of a 3.80T magnetic field, what is the maximum torque that this coil can experience?

Physics
A wire has a length of 5.40 102 m and is used to make a circular coil of one turn. There is a current of 2.30 A in the wire. In the presence of a 3.80T magnetic field, what is the maximum torque that this coil can experience?

Calculus PLEASE HELP! PLEASE PLEASE PLEASE
A long, straight wire of length 2L on the yaxis carries a current I. According to the BiotSavart Law, the magnitude of the magnetic field due to the current at a point (a,0) is given by B(a)= (mu sub 0 multiply by I) divided by 4pi times the integral

math (desperate help, please.
A long, straight wire of length 2L on the yaxis carries a current I. According to the BiotSavart Law, the magnitude of the magnetic field due to the current at a point (a,0) is given by B(a)= (mu sub 0 multiply by I) divided by 4pi times the integral

physics
A long straight horizontal wire carries a current I = 4.80 A to the left. A positive 1.00 C charge moves to the right at a distance 5.00 m above the wire at constant speed v = 4500 m/s . What is the magnitude B of the magnetic field at the location of the

physics
a currentcarrying wire is oriented at right angles to a uniform magnetic field. if the lenght of the wire is 0.50m and it experiences a force at 0.90n while carrying a current of 4.0a. what is the strength of the magnetic field?

physics
A wire carries a current I. At a distance of 6mm from the wire, the magnetic field strength is 0.004T. find the magnitude of current I.

College Physics
A current exists in a wire that gradually narrows down to a smaller diameter. How do the drift velocity, the current density, and the electric field vary along the wire? Can you please help explain this?

physics
Assume the Earth's magnetic field is 51.3 µT northward at 60.0° below the horizontal in a particular city. A tube in a neon sign stretches between two diagonally opposite corners of a shop window—which lies in a north–south vertical plane—and

Physics
A horizontal wire of length 0.48 m, carrying a current of 6.8 A, is placed in a uniform external magnetic field. When the wire is horizontal, it experiences no magnetic force. When the wire is tilted upward at an angle of 19° it experiences a magnetic