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A closely wound solenoid of 2000 turns a...

A closely wound solenoid of 2000 turns and area of cross-section `1.6 xx 10^(-4)m^(2)`, carrying a current of 4.0 A, is suspended through its centre allowing it to turn in a horizontal plane.
What is the magnetic moment associated with the solenoid ?

Text Solution

Verified by Experts

`N = 2000, A = 1.6 xx 10^(-4) m^(2), I = 4 "amp" = M = ?`
As m = NIA
`:. M = 2000 xx 4 xx 1.6 xx 10^(-4) = 1.28 JT^(-1)`.
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