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Assertion: The division are equaly marke...

Assertion: The division are equaly marked on the scale of `AC` ammeter.
Reason: Heat produced is directely proportional to the current

A

If both assertion and reason are true and the reason is the correct explanation of the assertion.

B

If both assertion and reason are true but reason is not the correct explanation of the assertion.

C

If assertion is true but reason is false.

D

If the assertion and reason both are false

Text Solution

Verified by Experts

The correct Answer is:
D
An ac ammeter is constructed on the basis of heating effect of the electric current. Since heat produced varies as square of current `(H = I^(2) R)` therefore the division marked on the scale of ac ammeter are not equally spaced.
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