Electricity and Magnetism Answers

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?

A cell has a terminal voltage of 50.0 V for a current of 10.0 A, and 54 V for a current of 6.0 A. Find the external resistance of each cell

A point charge has a charge of 9.00 x 10^-11C. At what distance from the point charge is the electrical potential (a) 13.0 V? (b) 25.0 V?

Two spheres of equal mass and equal charge are separated at a distance r.

(a) Derive an expression for the quantity of charge that must b on each sphere so that the spheres are in an equilibrium where attractive and repulsive forces are balanced.

(b)How would doubling the distance between spheres affect the expression for the value of q from the previous problem. Explain.

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?