A long solenoid is formed by winding 70 turns cm–1. If 2.0 A current flows, then the magnetic field produced inside the solenoid is _______ ( 0 = 4 10–7 TmA–1) [JEE Main 2023, 24 Jan (Shift 2)]

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YESPYQ · Accepted Answer

Correct answer: b) 176 10–4 T. Given, Number of turns in solenoid (n) = 70 turns cm– 1 Flow of current (i) = 2 A We know that, B = 0 ni B = 4 × 10–7 B = 4 × 10–5 70 × 2 B = 17.58 x 10–3 T B = 176 X 10–4 T Hence, magnetic field produce inside the solenoid (B) = 176 X 10–4 T.

A long solenoid is formed by winding 70 turns cm–1. If 2.0 A current flows, then the magnetic field produced inside the …

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