Statement 1 : A solenoid is connected to a battery so that a steady current flows through it. If an iron core is inserted into the solenoid, the current in the solenoid decreases.
Statement 2 : The magnetic flux linked with the solenoid increases on inserting an iron core into it, By Lenz’s law the induced emf which is set up due to this increasing flux, opposes the increase in current. Hence current in the solenoid decreases.

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statement 1 and statement 2 are false

statement 1 & statement 2 are True

Statement 1 is false & statement 2 are true

Statement 1 is True but the statement 2 is False.

answer is A.

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Detailed Solution

The current will decrease. This is because on inserting an iron core in the solenoid, magnetic field and hence magnetic flux linked with the solenoid increases. As per Lenz's law, the emf induced in the solenoid will oppose this increase, which can be achieved by a decrease in current.

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