Question
Physics Question on Alternating current
Hot wire ammeters are used for measuring
A
A.C. only
B
D.C. only
C
both A.C. and D.C.
D
none of these
Answer
both A.C. and D.C.
Explanation
Solution
Hot wires ammeters uses the heating effect of current so it is all the same for both a.c. & d.c. as heat generated is square function of current so even the sign in a.c. doesn't matter.