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Electricity and Magnetism
Page 10
Questions (3,267)
A pith ball charged negatively is suspended between two parallel conducting plates as shown in the diagram below.when the plates
3 answers
asked by
Nati
125 views
A power company transmits current through a 240,000 V transmission line. This voltage is stepped down at an area substation to
3 answers
asked by
Alex
336 views
The resistance of a given electric device is 46 ohms at
0 25 C . If the temperature coefficient of resistance of the material is
3 answers
asked by
Psy
547 views
A particle with a charge of 0.08 C is moving at right angles to a uniform magnetic field with a strength of 0.8 T. The velocity
3 answers
asked by
Ethan
785 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
1 answer
asked by
Anonymous
803 views
A capacitor is constructed with two parallel metal plates each with an area of 0.61 m^2 and separated by d = 0.80 cm. The two
4 answers
asked by
AAA
2,569 views
A uniform electric field of 775 N/C is produced within a particle accelerator. Starting from rest, what are the following?
(a)
3 answers
asked by
AAA
1,222 views
A steady current of 2A flows in a coil of emf 12V for 0.4s.
A back emf of 3V was induced during this period. The stored energy in
3 answers
asked by
Merry
684 views
A series circuit containing a 295 microfarad capacitor and a coil whose resistance and inductance are 3 ohms and 4.42 mH,
3 answers
asked by
Student
941 views
a student made an electromagnet using a battery electrical tape and metal wire. she wanted to see what the effect would be if
6 answers
asked by
machile
2,270 views
A proton has an initial speed of 7·105 m/s. It is brought to rest by an electric field.
a.) What is the magnitude of the voltage
2 answers
asked by
dan
698 views
If the electrical potential in a region is constant, the electric field must be zero everywhere in that region.
True False
3 answers
asked by
Bano
2,433 views
A metal sphere is insulated electrically and is given a charge. If 50 electrons are added to the sphere in giving a charge, how
3 answers
asked by
Saziye
1,904 views
What is the voltage across a capacitor after a time of two constants when a. charging from zero voltage and b. discharging from
3 answers
asked by
Jason
2,815 views
What is the power dissipated by resistor R1 of the following circuit: two batteries in series (with values V1 = 20 volts and V2
4 answers
asked by
Adam
2,200 views
The primary of a step-down transformer connected to a 240 V source has 1000 turns. The secondary has 100 turns. What is the
3 answers
asked by
Natalie
3,556 views
What is the current through a wire if 240 coulombs of
charge pass through the wire in 2.0 minutes?
5 answers
asked by
Physics
6,400 views
What is the value of charge of a body that Carries 20 excess electrons
7 answers
asked by
denny
812 views
A capacitor is constructed of two concentric conducting cylindrical shells. The radius of the inner cylindrical shell is 2.35
3 answers
asked by
Anne
764 views
A wire carries a 15 microampere current.
How many electrons pass a given point on the wire in 1.0 ?
3 answers
asked by
josh sanches
1,597 views
1. A surface charge can be produced on insulators by
a. grounding b. induction c. polarization d. contact 2. Unlike insulators,
4 answers
asked by
Jannie
3,285 views
Which observation or inference is correct
the wire was not connected to the source the model needs a switch in order to work the
3 answers
asked by
:)
120 views
a 9 v battery produces a current of 18 amps. what is the resistance
3 answers
asked by
Anonymous
645 views
An object with a charge of 2.0x10-4 C creates an electric field. A test charge of +1.0x10-6 C experiences a force of 0.050 N.
3 answers
asked by
idk
952 views
What is the resistivity or cylindrical material wire whose 1.0m length has a resistance of 2.0 ohms? the diameter of the wire is
3 answers
asked by
Hajara lawal
573 views
Two uniform spherical charge distributions (see figure below) each have a total charge of 85.7 mC and radius R = 15.2 cm.Their
3 answers
asked by
AAA
715 views
A voltage at a frequency of 500KHz is maintained across a coil with a variable capacitor .when the capacitor is set to 455pF,
6 answers
asked by
Jade
530 views
calculate the resistivity of a wire of length 2m and cross-sectional area 0.004cm square if resistanceis 3.0 ohm?
5 answers
asked by
BIZHATOCOTO
1,240 views
The figure below represents a section of a circular conductor of nonuniform diameter carrying a current of 4.50 A. The radius of
3 answers
asked by
Tony
2,670 views
A transformer has 60 turns in the primary and 1200 turns in secondary.if the primary voltage is 500 V what will be the secondary
4 answers
asked by
Hannah
1,146 views
ABC is an equilateral triangle of side 4.0 cm in a vacuum. There are point charges of 8.0C at A and B. Find (a) the potential,
3 answers
asked by
Hezekiah
1,002 views
The two small spheres each with mass m= 25g are hung by silk threads length L=.65m from a common point. When the spheres are
2 answers
asked by
someone
1,349 views
What are the charges on and the potential difference across each capacitor in the figure if V = 13.2 V?
2 answers
asked by
king
814 views
A proton is released from rest inside a region of constant, uniform electric field E1 pointing due North. 14.8 seconds after it
3 answers
asked by
Joe
4,211 views
A 24 V battery of internal resistance 4 ohm is connected to a variable resistor. At what value of the current drawn from the
3 answers
asked by
Himanshu Kumar
3,169 views
At what frequency does the inductive reactance of a 42.0 µH inductor equal the capacitive reactance of a 42.0 µF capacitor?
kHz
4 answers
asked by
ANITA
1,558 views
A transformer has 25 turns in the primary coil and 200 turns in the secondary coil. If 12 V is connected to the primary coil and
3 answers
asked by
Natalie
1,424 views
Determine the minimum electric potential difference (in volts) that must be applied to accelerate an α-particle so that on
2 answers
asked by
Anonymous
478 views
A positively charged glass rod is brought close to a neutral sphere that is supported on a nonconducting plastic stand. Sketch
3 answers
asked by
julie
3,297 views
suppose that two point charges each with a charge of +1 coulomb are separated by a distance of 1 meter will they attract or
3 answers
asked by
Anonymous
1,027 views
Two charges are placed on the x axis. One of the charges (q1 = +7.91C) is at x1 = +3.00 cm and the other (q2 = -27.3C) is at x2
2 answers
asked by
Anonymous
546 views
Particle 1 and particle 2 have masses of m1 = 1.5×10-8 kg and m2 = 6.2×10-8 kg, but they carry the same charge q. The two
3 answers
asked by
Anonymous
1,658 views
A transformer has 3,000 loops in its primary coil and 1,500 loops in its secondary coil. What is the voltage in the secondary
3 answers
asked by
christine
770 views
An electric drill operates at a potential difference of 120V and draws a current of 1.5 Amps. If it takes 50 seconds to drill a
5 answers
asked by
Don
937 views
A small cork with an excess charge of +6.0 µC
is placed 0.25 m from another cork, which carries a charge of −3.2 µC. What is
4 answers
asked by
Angel
2,388 views
Three resistors of different values can be connected together in different configurations.
If all three resistors are used in a
3 answers
asked by
DCM
791 views
A parallel-plate capacitor is made from two plates 12.0cm on each side and 4.50mm apart. Half of the space between these plates
4 answers
asked by
Rachel
2,061 views
A resistor is connected across the terminals of a 6.00-V battery, which delivers 3.50 105 J of energy to the resistor in 11
4 answers
asked by
Anonymous
1,456 views
A long, thin straight wire with linear charge density -λ runs down the center of a thin, hollow metal cylinder of radius R. The
3 answers
asked by
David D.
2,647 views
Two 10 cm diameter charged rings face each other, 20 cm apart. The left ring is charged to -20 nC and the right ring is charged
5 answers
asked by
David D.
2,957 views
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