why a soft iron is placed in a current carrying solenoid
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Iron is highly ferromagnetic material. Hence, it allows maximum number of field lines to pass through it. ... When a soft iron bar/core is placed inside the solenoid, it magnetizes the iron bar thereby increasing the strength of the magnetic field inside the solenoid.
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Iron is highly ferromagnetic material.Hence, it allows maximum number of field lines to pass through it.
When current carrying solenoid is taken, it produces its own magnetic inside and outside the solenoid.
When a soft iron bar is placed inside the solenoid ,it magnetizes the iron bar thereby increasing the strength of magnetic field inside the solenoid.
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