Ohms 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 using Ohm's Law?

Back

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

Front

If the voltage is 12 volts and the resistance is 6 ohms, what is the current?

Back

2 Amps (I = V / R = 12V / 6Ω).

Front

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

Back

The current decreases.

Front

What is the unit of measurement for resistance?

Back

Ohm (Ω).

Front

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

Back

3 Amps (I = V / R = 24V / 8Ω).

Front

What is the relationship between voltage, current, and resistance in a circuit?

Back

Voltage is equal to the product of current and resistance (V = I × R).

Front

If the current is 4 Amps and the resistance is 2 Ohms, what is the voltage?

Back

8 Volts (V = I × R = 4A × 2Ω).

Front

What size resistor is needed to achieve a current of 3 Amps with a 12 Volt battery?

Back

4 Ohms (R = V / I = 12V / 3A).

Front

What is the effect on current if the voltage is doubled while resistance remains the same?

Back

The current will double.