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Assertion (A): In our houses, the current in AC electricity line changes direction 60 times per second.

Assertion (A): In our houses, the current in AC electricity line changes direction 60 times per second.
Reason (R): The frequency of alternating voltage supplied is 60 hertz.

(a)

Both A and R are true, and R is the correct explanation of A.

(b)

Both A and R are true, but R is NOT the correct explanation of A.

(c)

A is true, but R is false.

(d)

A is false, but R is true.

Answer:

(a)

Moderate

Explanation

Frequency of 60 Hz implies the current changes direction 60 times/second. Hence, (A) is correct.