1) diagram 1 represents an electric circuit.will the bulb B1 glow.explain?2) if a soft iron core is introduced in the same coil will the bulb B1 glow?explain

Dear student,

The magnetic filed inside the coil magnetizes the iron and the inductive reactance inside the coil increases.
This causes the increase in the intensity in the brightness of the bulb glowing.

Regards

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