Question

At the mid point along the length of a long solenoid, the magnetic field is equal to



b. If the length of solenoid is doubled and the current is reduced to half, the magnetic field at the new mid point will nearest to



a.2b



b.B



c.B 4



d.B 2

Answer 1

Answer:

answer is c c c c c c

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Answer 2

Answer:b/2

Explanation: