What determines the polarity at the ends of an electromagnet? The
A
magnitude of the current passing through the wire
B
material of the core of the magnet
C
material of the coil
D
direction of current in the wire
Verified Correct Answer: D.
Physical Principles & Numerical Solution
No expanded working has been attached for this question yet. The verified answer is Option D.
Source: Myschool Past Questions Archive (Record #45684)