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 is expressed as V = I × R.

Front

What is the formula to calculate current using Ohm's Law?

Back

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

Front

What is the formula to calculate voltage using Ohm's Law?

Back

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

Front

What is the formula to calculate resistance using Ohm's Law?

Back

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

Front

If a circuit has a voltage of 12V and a resistance of 6Ω, what is the current?

Back

The current is 2A (I = V / R = 12V / 6Ω).

Front

What is the unit of measurement for resistance?

Back

The unit of measurement for resistance is Ohm (Ω).

Front

What is the unit of measurement for current?

Back

The unit of measurement for current is Ampere (A).

Front

What is the unit of measurement for voltage?

Back

The unit of measurement for voltage is Volt (V).

Front

If a circuit has a current of 3A and a resistance of 4Ω, what is the voltage?

Back

The voltage is 12V (V = I × R = 3A × 4Ω).

Front

What happens to the current if the resistance increases while the voltage remains constant?

Back

If the resistance increases while the voltage remains constant, the current decreases.