Circuits & Ohm's Law

Front

What is Ohm's Law?

Back

Ohm's Law states that the current (I) through a conductor between two points is directly proportional to the voltage (V) across the two points and inversely proportional to the resistance (R) of the conductor. It can be expressed as V = I × R.

Front

What is the formula to calculate current in a circuit?

Back

The formula to calculate current (I) is I = V / R, where V is voltage and R is resistance.

Front

What is the unit of current?

Back

The unit of current is Amperes (A).

Front

What is the unit of voltage?

Back

The unit of voltage is Volts (V).

Front

What is the unit of resistance?

Back

The unit of resistance is Ohms (Ω).

Front

What is a series circuit?

Back

A series circuit is a circuit in which the components are connected end-to-end, so that the same current flows through each component.

Front

What is a parallel circuit?

Back

A parallel circuit is a circuit in which the components are connected across common points or junctions, providing multiple paths for the current to flow.

Front

If a circuit has a voltage of 24V and a resistance of 8Ω, what is the current?

Back

3 Amps (I = V / R = 24V / 8Ω).

Front

What does DC stand for in electrical terms?

Back

DC stands for Direct Current.

Front

What is the voltage in a circuit with a resistance of 5Ω and a current of 2A?

Back

10 Volts (V = I × R = 2A × 5Ω).