Question

derive expression for magnetic field due to long straight solenoid
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Answer 1

Answer:

here is ur answer dude

Explanation:

The magnitude of the total field is obtained by integrating over all the elements from x = −l to x = +l. This is the expression for magnetic field due to a solenoid on the axial line at a distance r from the centre.

hope it helps

Answer 2

See pic please and mark me as brainliest