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Question: Answered & Verified by Expert
P and Q are two circular thin coils of same radius and subjected to the same rate of change of flux. If coil P is made up of copper and Q is made up of iron, then the wrong statement is

PhysicsElectromagnetic InductionNEET
Options:
  • A emf induced in the two coils is the same
  • B the induced current in P is more than that in Q
  • C the induced current in P and Q are in the same direction
  • D the induced currents are the same in both the coils.
Solution:
1205 Upvotes Verified Answer
The correct answer is: the induced currents are the same in both the coils.
Induced emf is,

e=-dφdt=-AdBdt

Therefore induced emf and direction of current does not depend on material of the coil but resistance of copper is less than iron therefore current in copper coil is more.

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