| Assertion: The divisions are equally marked on the scale of A.C. ammeter. |
| Reason: Heat produced is directly proportional to the current. |
A) If both assertion and reason are true and reason is the correct explanation of assertion.
B) If both assertion and reason are true and reason is not the correct explanation of assertion.
C) If assertion is true but reason is false.
D) If both assertion and reason are false.
E) If assertion is false but reason is true.
Correct Answer: D
Solution :
An A.C. ammeter is constructed on the basics of heating effect of the electric current. Since heat produced varies as square of current\[\left( H={{I}^{2}}R \right)\]. Therefore the division marked on the scale of A.C. ammeter is not equally spaced.
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