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Magnetic Field Due to Current Carrying Solenoid

A soft iron b...

Question

A soft iron bar is inserted inside a current-carrying solenoid. The magnetic field inside the solenoid:

(a) will decrease
(b) will increase
(c) will become zero
(d) will remain the same

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Solution

(b) will increase
If a soft iron bar is inserted inside a current-carrying solenoid, the magnetic field inside the solenoid will increase.

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