Assertion (A): A hot wire ammeter has a cramped scale.
Reason (R): The heat is proportional to square of current.
A. Both A and R are true and R is correct explanation of A.
B. Both A and R are true and R is not correct explanation of A.
C. A is ture and R is false.
D. A is false and R is true.
Show Answer
Answer: A
Share your understanding of this question with the correct explanation.