1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

# Alternating current can not be measured by dc ammeter because

A
ac cannot pass through dc ammeter
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
Average value of complete cycle is zero
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C
ac is virtual
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
ac changes its direction
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

## The correct option is B Average value of complete cycle is zeroIn dc ammeter, a coil is free to rotate in the magnetic field of a fixed magnet. If an alternating current is passed through such a coil, the torque will reverse it’s direction each time the current changes direction and the average value of the torque will be zero.

Suggest Corrections
2
Join BYJU'S Learning Program
Related Videos
Introduction
PHYSICS
Watch in App
Explore more
Join BYJU'S Learning Program