Question

Assertion (A): An electric bulb is rated as 100 W–220 V.

Reason (R): If the bulb is lighted on a 220 V supply, the electric power consumed by it is 100 W (100 J/s).

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:

The rating means that the bulb consumes a power of 100 W when connected to its rated supply voltage of 220 V. Thus, the reason correctly explains the assertion.