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Electricity and Magnetism
Page 9
Questions (3,260)
A total charge of 6.01 mC passes through a
cross-sectional area of a wire in 2.38 s. What is the current in the wire? Answer in
4 answers
asked by
dan
961 views
An electron is projected into a uniform electric field E = (1000 N/C)i with an initial velocity (2.00* 10^6m/s)i in the
4 answers
asked by
Ann
2,181 views
The potential difference across the terminals of a storage battery not connected in any circuit is observed to be 12 V. When it
4 answers
asked by
DariaV
2,100 views
explain the statement the capacitance of a capacitor is 5uf
7 answers
asked by
OLOPADE
3,603 views
A wire is made of a material with a resistivity of 4.85109 × 10−8 Ω · m . It has length 5.57436 m and diameter 0.36396 mm .
4 answers
asked by
Anonymous
1,285 views
A large spool in an electrician's workshop has 52 m of insulation-coated wire coiled around it. When the electrician connects a
4 answers
asked by
Drue
1,220 views
Two positive charges of 6.83 µC each are
673 cm apart. Find the electric field midway between them. The value of the Coulomb
3 answers
asked by
Anonymous
840 views
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
4 answers
asked by
bob
1,449 views
A parallel plate capacitor is connected to a voltage source as shown in Figure 4.76a. The dielectric is free space. A flat
4 answers
asked anonymously
100 views
Object A has a charge of –1 Coulomb. At a given distance, the object with which charge would be most strongly attracted by
4 answers
asked by
hayden
1,053 views
A given wire has a resistance of 17.5 ohms. If its length is 560 m, how much length must be cut-off from the wire in order to
3 answers
asked by
dumon
1,834 views
A circuit consists of parallel combination 8&12ohms& unknown resistance of R ohm is connected in series with it the total power
3 answers
asked by
Prasad
621 views
A microwave oven has a power requirement of 1250 W. A frozen dinner requires 6.5 min to heat on full power.
How much electrical
3 answers
asked by
kim
1,588 views
In a thundercloud there may be an electric
charge of 46 C near the top of the cloud and −46 C near the bottom of the cloud. If
4 answers
asked by
sally
6,513 views
two capacitors of capacitance 4 micheal farad and 6 micheal farad are connected in series to a 100v DC supply.Draw the
5 answers
asked by
abdul waris
1,482 views
How does the energy stored in a capacitor change if (a) the potential difference is
doubled, and (b) the charge on each plate is
4 answers
asked by
Jep
1,845 views
Suppose electrons enter a uniform electric field midway between two plates at an angle ¦È0 to the horizontal, as shown in the
4 answers
asked by
Anonymous
1,415 views
an electron with a speed of 5.00 x 10^8 cm/s enters an electric field of magnitude 1.00 x 10^3 N/C, traveling along field lines
3 answers
asked by
Anonymous
3,023 views
In a series RCL circuit the generator is set to a frequency that is not the resonant frequency. This nonresonant frequency is
4 answers
asked by
Please HELP
1,585 views
The electric potential in a certain region is V = a x2 + b x + c, where a = 15 V/m2, b = −13 V/m, and c = 67 V.
1)Determine the
3 answers
asked by
physics
833 views
A charge of 0.25 C moved from a position where the electric potential is 20 V to a position where the potential is 50 V. What is
4 answers
asked by
Mikie
2,268 views
The typical resistance of the tungsten filament of a 60 watt incandescent light bulb when it is turned off is 24 ohms and its
4 answers
asked by
Joseph
1,957 views
A gold wire 5.90m long and of diameter 0.890 mm carries a current of 1.21A.
A)Find the resistance of this wire. B)Find the
2 answers
asked by
help
691 views
You have a 0.600-m-long copper wire. You want to make an N-turn current loop that generates a 1.30 mT magnetic field at the
4 answers
asked by
Spencer
2,521 views
A non-inductive resistor is connected in series with a
coil across a 230 V, 50 Hz supply. The current is 1.8 A and the potential
4 answers
asked by
Afaq
379 views
Three long wires parallel to the x axis carry currents as shown. If I = 20 A, what is the magnitude of the magnetic field at the
3 answers
asked by
AAA
921 views
Two charges are located on the positive x-axis of a coordinate system. Charge q1 = 2.00 × 10−9C, and it is 0.020 m from the
3 answers
asked by
Anonymous
1,121 views
A source consists of three charged particles located at the vertices of a square (see figure below), where the square has sides
2 answers
asked by
AAA
527 views
Two point charge of +16 and -9 are placed 8cm apart in air.determine the position of the point at which the resultant electric
4 answers
asked by
Shailendra
2,782 views
Two bodies X and Y carry charges -6.6 microcolumb and -5 microcolumb. How many electron should be transferred from X to Y so
4 answers
asked by
R K
1,755 views
Three particles have charges +20μC each.They are fixed at the corners of an equilateral triangle of side 0.5m .The force on
3 answers
asked by
Pooja
3,803 views
the current through a meter movement is 150 micro amperes. what is the dc value if the instrument uses half-wave rectification?
4 answers
asked by
Anonymous
1,012 views
Two charges repel each other with a force of 10-5newton when they are 20cm apart. what is the force on each of them are i 3cm
4 answers
asked by
physics
2,861 views
The substation bus bar is made up of 2-iches round copper bars 20 ft. long. What is the resistance of each bar if resistivity is
3 answers
asked by
Jhun
1,078 views
The current I in an electrical conductor varies inversely as the resistance R of the conductor. The current is 50 amps when the
4 answers
asked by
Anonymous
4,085 views
A 33.0-mH inductor has a reactance of 2.20 kΩ.
(a) What is the frequency of the ac current that passes through the inductor? (b)
4 answers
asked by
linds
1,295 views
Two identical +9.0 µC point charges are initially spaced 5.2 cm from each other. If they are released at the same instant from
3 answers
asked by
Jon
3,032 views
The electric field between the plates of a paper-separated (K = 3.75) capacitor is 9.21 104 V/m. The plates are 2.05 mm apart
4 answers
asked by
Conor
1,023 views
The heating element of a simple heater consists of a 2.2m--long, 0.70mm--diameter nichrome wire. When plugged into a 120 V
4 answers
asked by
Kayla
1,858 views
Given that the electric potential is 7.0×10^−2 V higher outside the cell than inside the cell, and that the cell membrane is
3 answers
asked by
nikki
1,358 views
A 0.10 g plastic bead is charged by the addition of 1.0 x 1010 excess electrons. What electric field (strength and direction)
3 answers
asked by
Jessika
2,141 views
Four positive charges are fixed at the corners of a square, as shown above. Three of the charges have magnitude Q, and the
4 answers
asked by
christina
3,901 views
Two electrostatic point charges of +30 μC and +25 μC exert a repulsive force of 200 N on each other. What is the distance
4 answers
asked by
ashley --- HELP PLEASEE!!!
1,103 views
A capacitor stores 5.25 x 10^-5 C of charge when connected to a 1.5-V battery. How much charge does the capacitor store when
1 answer
asked by
ali-1
396 views
The work done by an electric force in moving a charge from point A to point B is 2.76 10-3 J. The electric potential difference
3 answers
asked by
michelle
1,425 views
If a proton is accelerated from rest through a potential difference of 1500 V, find its final velocity. proton mass = 1.67
4 answers
asked by
angela
3,194 views
WHAT ARE THREE THINGS ARE REQUIRED TO PRODUCE VOLTAGE? THESE THREE THINGS ARE THE FUNDAMENTALS OF HOW AN ELECTRICAL GENERATOR
4 answers
asked by
PHYSICSHELP
872 views
If you place a free electron and a free proton in the same electric field, how do the forces acting on them compare? How do
5 answers
asked by
Mary
3,908 views
A transformer has a secondary voltage of 12 V. The primary voltage is 60V. The number of turns in the secondary is 100. How many
4 answers
asked by
TJ
531 views
A slab of metal of volume V is made into a rod of length L. The rod carries current I when the electric field inside is E.Find
9 answers
asked by
Spencer
1,343 views
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