Electric Circuits Answers

The magnitude of the electric current in a circuit will definitely increase if 

1. more cells are in parallel 
2. the resistors are connected in parallel 
3. the cells are connected in parallel and the resistors in series 
4. Both the cells and resistors are connected in parallel 

A tesla car needs to charge its 350-volt model and must send about 715 amps through its cabling to the battery. What is the rate of electron flow through the cable for the current involved?

An aluminum wire with a diameter of 1.02 mm and volume of 1.57x10-5 m3, has a battery attached to it with an emf of 30 volts. Find (a) the resistance of the wire and (b) the corresponding current.

A tesla car needs to charge its 350-volt model and must send about 715 amps through its cabling to the battery. What is the rate of electron flow through the cable for the current involved?

Two particles having charges 𝑞₁ = 1.00 × 10⁻¹⁹𝐶 and 𝑞₂ = 2.00 × 10⁻⁹𝐶 are separated by a distance 2.00m. At what point is the total electric field due to the two charges equal to zero? 

The electric field caused by a certain point charge has a magnitude of 5.0 × 10³ 𝑁/𝐶

at a distance 0.10m from the charge. What is the magnitude of the charge?

What is the electric field 30cm from a charge 𝑞 = 4 × 10⁻⁹𝐶?

Two charges are located on the positive x-axis of a coordinate system. Charge 𝑞₁ = 2 × 10⁻⁹𝐶 is 2cm from the origin, and charge 𝑞₂ = −3 × 10⁻⁹𝐶 is 4cm from the origin. What is the total force exerted by these two charges on a charge 𝑞₃ = 5 × 10⁻⁹𝐶 located at the origin?

How many excess electrons must be placed on each of two small spheres spaced 3cm apart if the spheres are to have equal charge and if the force of repulsion between them is to be 10⁻¹⁹𝑁?

A negative charge of −0.50 × 10⁻⁶𝐶 exerts a repulsive force of magnitude 0.20 N on an unknown charge 0.20 m away. What is the unknown charge (magnitude and sign)?