Question

Assertion (A): Higher the resistance of a filament lamp, less is the energy consumed by it.

Reason (R): Higher resistance of filament reduces the magnitude of current in an electric circuit.

Options

• Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).

• Both Assertion (A) and Reason (R) are true but Reason (R) is not the correct explanation of Assertion (A).

• Assertion (A) is false, but Reason (R) is true.

• Assertion (A) is true, but Reason (R) is false.

Answer 1

Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).

Explanation:

At the same supply voltage and for the same time, higher resistance reduces the current and the power consumed. Since electrical energy consumed is power multiplied by time, the lamp consumes less energy.