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A long solenoid is fabricated by closely...

A long solenoid is fabricated by closely winding a wire of diameter `0.5 mm` over a cylindrical nonmagnetic frames so that the successive turns nearly touch each other.What would be the magnetic field `B` at the centre of the solenoid if it carries a current of `2.5 A`?

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RESONANCE-ELECTRODYNAMICS-Exercise-1 PART-2
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  18. A particle moves in a region having a uniform magnetic field and a par...

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