A coil and a bulb are connected in series with a `dc` source, a soft iron core is then inserted in the coil. ThenA. intensity of the bulb remains the sameB. intensity of the bulb decreaseC. intensity of the bulb increaseD. the bulb ceases to glow

A coil and a bulb are connected in series with a `dc` source, a soft i

1.	A coil and a bulb are connected in series with a `dc` source, a soft iron core is then inserted in the coil. ThenA. intensity of the bulb remains the sameB. intensity of the bulb decreaseC. intensity of the bulb increaseD. the bulb ceases to glow
Answer» Correct Answer - B There will be self-induction effect when soft iron core is inserted in the coil. So, intensity of bulb increases.

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A coil and a bulb are connected in series with a `dc` source, a soft iron core is then inserted in the coil. ThenA. intensity of the bulb remains the sameB. intensity of the bulb decreaseC. intensity of the bulb increaseD. the bulb ceases to glow

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