Electric Circuits Answers

A charge of 600 C flows through a rheostat in which a steady current is

maintained for 120 sec. What is the current?

A steady current of 10 A maintained for 1 hr deposits 12.2 g of zinc at the

cathode. What is the equivalent mass of zinc?

A 12.5 V Battery operates s 14.2 ohms flashlight intermittently for a cumulative

time of 65.3 min. (a) What is the average current? (b) What quantity of electricity

is furnished by the battery?

What current flows through an electric iron having a resistance of 13 ohms when connected across a line having 120 V?

A charge of 3,600 C passes through an electric lamp in 3.0 min. What is the current in the lamp?

A point charge q=2.00uC is located at the origin. Find the electric potential due to this charge at point x=4.0

Calculate the power in a 1000 Ω electric heater if the current through it is (a) 0.5 A & (b) 1A.

providing the given, required, formula,

solution/substitution of data

1. Calculate the resistance of a copper wire that is 3-meter long and has a diameter of 0.005m.

2. The resistance of a piece of carbon at 20⁰C is 10 Ω. What is its resistance at (a) 30⁰C &(b) 10⁰C?

providing the given, required, formula, solution/substitution of data,

What is the resistance R of a 51.7 m long aluminum wire that has a diameter of 8.93mm? The resistivity of aluminum is 2.83 x 10^-8

1. A coil has inductance of 0.318H and aresistance of 200V .a capacitor of value 3.18Micro farads is connected in parallel with a coil of a sinusoidal supply of variable frequency.calculate the frequency at which the supply of current and voltage are in phase.