NDA General Science Physics Questions Part 2
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In a solenoid, the current flowing through the wire 𝐼 and number of turns per unit length is 𝑛. This gives a magnetic field 𝐵 inside the solenoid. If number of turn per unit length is increased to 2𝑛, what will be the value of magnetic field in the solenoid?
[NDA I 2017]
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