Ohm's Law

Front

What is Ohm's Law?

Back

Ohm's Law states that the current (I) flowing 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

What is the unit of Voltage?

Back

The unit of Voltage is the Volt (V).

Front

What is the unit of Current?

Back

The unit of Current is the Ampere (A).

Front

What is the unit of Resistance?

Back

The unit of Resistance is the Ohm (Ω).

Front

If the resistance in a circuit is 10 Ω and the current is 2 A, what is the voltage?

Back

20 V (using V = I × R).

Front

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

Back

The current will increase.

Front

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

Back

The current will decrease.

Front

What is a closed circuit?

Back

A closed circuit is a complete electrical circuit around which current flows or circulates.

Front

What is an open circuit?

Back

An open circuit is a broken circuit where current cannot flow due to a gap or break in the path.