Electro Magnetic Induction And Alternating Currents Question 124
Assertion : The divisions are equally marked on the scale of ac ammeter. Reason : Heat produced is directly proportional to the square of the current.
Options:
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 are both false.
E) If assertion is false but reason is true.
Show Answer
Answer:
Correct Answer: D
Solution:
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.
BETA
