Which of the following is not true of electromagnets?
A. They are expensive
B. They require power supply
C. They don’t require cooling system
D. They don’t require extensive shielding
Answer:C
Which of the following is not true of electromagnets?
A. They are expensive B. They require power supply C. They don’t require cooling system D. They don’t require extensive shielding
Explanation: Electromagnets require power supply. They also require cooling systems.