There are 50 turns of a wire in every cm...

There are `50` turns of a wire in every `cm` langth of a long solenoid. If `4` ampere current is flowing in the solenoid, the approximate value of magnetic field along its axis at an internal point and at one end will be respectively

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There are `50` turns of a wire in every `cm` langth of a long solenoid. If `4` ampere current is flowing in the solenoid, the approximate value of magnetic field along its axis at an internal point and at one end will be respectively

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