Ohm’s Law Practice Quiz

An alarm clock draws 0.5 A of current when connected to a 120 volt circuit. Calculate its resistance.

A 12 Volt car battery pushes charge through the headlight circuit resistance of 10 ohms. How much current is passing through the circuit?

How much voltage would be necessary to generate 10 amps of current in a circuit that has 5 ohms of resistance?

A circuit contains a 1.5 volt battery and a bulb with a resistance of 3 ohms. Calculate the current.

A walkman uses a standard 1.5 V battery. How much resistance is in the circuit if it uses a current of 0.01A?

An electric heater works by passing a current of 100 A through a coiled metal wire, making it red hot. If the resistance of the wire is 1.1 ohms, what voltage must be applied to it

What happens to the current in a circuit if a 10Ω resistor is removed and replaced by a 20Ω resistor?