Statement 1: Both dc and ac can be measured by a hot wire instrument.
Statement 2: the hot wire instrument is based on the principle of magnetic effect of current.

Options

A. If both the assertion and reason are true and reason is a true explantion of the assertion.
B. If both the assertion and reason are true but the reason is not true the correct explantion of the assertion.
C. If the assertion is true but reason false
D. If both the assertion and reason are false.

Answer

C

Explanation

Both `AC` and `DC` produce heat, which is proportional to square of the current. The reversal of direction of current in `AC` is immaterial so far as production of heat is concerned.