Electricity and Magnetism Answers

A parallel-plate capacitor has a capacitance C. What is the new

capacitance if a dielectric with K = 4 is inserted between its plates?

Suppose the space between the plates of the capacitor is filled

with equal thickness of the same dielectrics but arranged as

shown in the figure. Each having an area of 8.0x10-4 m2 and

separated from each other by 5.0 mm. Half of the space between

the plates is filled with glass and the other with mica. What is its

capacitance?

The speed of a car is decreased uniformly from 30 meters per second to 10 meters per second in 4 seconds. The magnitude of the car's acceleration in m/s^2 is

A point charge q1 = +3.80 μC is at origin. How far should the second point charge of +6.20 μC be placed to have electric potential energy of 0.700 J?

Two charges lie on positive x-axis . Charge A (3.0 x 10^-10 C) is 3.0 cm from the origin and Charge B is 5.0 cm from the origin (-4.0 x 10^-10 C). What is the total force exerted by these two charges on charge C (6.0 x 10^-10 C ) located at the origin ?

What is the resistance and temperature coefficient of resistance of a resistor if its color code is yellow-green-blue-violet-red-yellow?

A point charge has a charge of 9.00 x 10^-12 C. At what distance from the point charge is the electrical potential (a) 13.0 V? (b.) 25.0 v?

A point charge q₁ = +3.90 is at origin. How far should the second point charge of +6.30  be placed to have electric potential energy of 0.700 J?

derive the expression for electric potential of a line charge

A charge of 4.50x10^-8C is placed in a uniform electric field that is directed vertically upward with a magnitude of 5.00x10^4N/C. What work is done by the electrical force when the charge moves 0.450m to the right? 0.800m downward? 2.60m at an angle of 45° from the horizontal?