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 voltage?

Back

Voltage (V) can be calculated using the formula: V = I × R, where I is the current in amperes and R is the resistance in ohms.

Front

If a circuit has a current of 5 A and a resistance of 10 Ω, what is the voltage?

Back

50 V (calculated using V = I × R).

Front

What is the unit of resistance?

Back

The unit of resistance is the Ohm (Ω).

Front

How do you calculate current using Ohm's Law?

Back

Current (I) can be calculated using the formula: I = V ÷ R.

Front

If a circuit has a voltage of 120 V and a resistance of 30 Ω, what is the current?

Back

4 A (calculated using I = V ÷ R).

Front

What is the unit of current?

Back

The unit of current is the Ampere (A).

Front

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

Back

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

Front

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

Back

The relationship is defined by Ohm's Law: V = I × R.

Front

If a circuit has a voltage of 9 V and a current of 3 A, what is the resistance?

Back

3 Ω (calculated using R = V ÷ I).