Which device does NOT make use of the magnetic effects of an electric current?
A
hot-wire ammeter
B
moving-coil ammeter
C
moving-coil loudspeaker
D
moving-iron ammeter
E
telephone earpiece
Verified Correct Answer: A.
Physical Principles & Numerical Solution
No expanded working has been attached for this question yet. The verified answer is Option A.
Source: Myschool Past Questions Archive (Record #42864)