A coil and a bulb are connected in series with a `dc` source, a soft iron core is then ninserted in the coil. Then

A coil and a bulb are connected in series with a dc source, a soft iron core is then inserted in the coil. Then

A coil and a bulb are connected in series with a 12 volt direct current source. A soft iron core is now inserted in the coil. Then

A coil and a bulb are connected in series with a 12 volt direct current source. A soft iron core is now inserted in the coil. Then

A bulb and an air-cored coil are connected in series with a 20 V DC source. Now a soft-iron core is inserted inside the coil. During the time interval when iron core is being inserted

An air core coil and an electric bulb are connected in series with an AC source. If an iron rod is put in the coil, then the intensity of light of the bulb will

An air core coil and an electric bulb are connected in series with an AC source. If an iron rod is put in the coil, then the intensity of light of the bulb will

A coil and an electric bulb are connected in series with an ac. Source. On introducing a soft iron bar inside the coil, the intensity of the bulb will

An iron choke and an electric bulb are connected in series with AC mains. On introducing a soft iron bar in the coil, the intensity of bulb will