Electro Magnetic Induction And Alternating Currents Question 338
Question: A conducting ring is placed around the core of an electromagnet as shown in fig. When key K is pressed, the ring
Options:
A) Remain stationary
B) Is attracted towards the electromagnet
C) Jumps out of the core
D) None of the above
Show Answer
Answer:
Correct Answer: C
Solution:
When key k is pressed, current through the electromagnet start increasing i.e. flux linked with ring increases which produces repulsion effect.
