Electric Circuits Answers

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.

When Asinusoidal current of maximum value of 20mA flows through aresistor ,the p.d across its ends is 400V maximum .find the energy dissipated by resistor in a time of 5minutes