On which of the following does the operation of a moving coil ammeter depend? i. Electromagnetic induction ii. Force on a carrying-current conductor iii. Magnetic effect of an electric current
A
i only
B
ii only
C
iii only
D
ii and iii only
E
i,ii and iii
Verified Correct Answer: D.
Physical Principles & Numerical Solution
A moving coil ammeter operates based on the torque produced when current flows through a coil in a magnetic field, which stems from the force on a current-carrying conductor and the magnetic field generated by the electric current itself.
Source: Myschool Past Questions Archive (Record #28650)