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.



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