Assertion (A): A 200 W bulb consumes 2 units of electrical energy when it is used for 10 hours.
Reason (R): 1 unit of electrical energy = 1000 k Wh .

Options

A. (A) and (R) are correct and (R) is correct explanation for (A).
B. (A) and (R) are correct but (R) is not the correct explanation for (A).
C. (A) is correct but (R) is not correct.
D. Both (A) and (R) are not correct.

Answer

C

Explanation

We know ` P= Q//t`
`implies Q = P xx t `
`Q = 200 W xx 10 h`
`= 2000 Wh`
` = 2k Wh ( :. 1 unit = 1 k WH)`
=2 electrical units
Hence , A is correct but R is not correct .