Ohm's Law Calculation Practice

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 Voltage?

Back

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

Front

What is the formula to calculate Current?

Back

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

Front

What is the formula to calculate Resistance?

Back

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

Front

If a circuit has a voltage of 48 volts and a resistance of 6 ohms, what is the current?

Back

I = V / R = 48V / 6Ω = 8 Amps.

Front

What is the unit of Voltage?

Back

The unit of Voltage is Volts (V).

Front

What is the unit of Current?

Back

The unit of Current is Amperes (A) or Amps.

Front

What is the unit of Resistance?

Back

The unit of Resistance is Ohms (Ω).

Front

If a circuit has a current of 3 Amps and a resistance of 8 Ohms, what is the voltage?

Back

V = I × R = 3A × 8Ω = 24 Volts.

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.