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A solenoid 50 cm long has 4 layers of wi...

A solenoid 50 cm long has 4 layers of windings of 350 turns each. If the current carried is 6A. Find the magnetic field at the centre of the solenoid

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Here Length =50 cm =0.5m
i=6A
Number of turns per unit length `=n=(4xx350)/0.5=2800m^(-1)`
Magnetic field at the centre `=mu_(0)ni=4pixx10^(-7)xx2800xx6=2.11xx10^(-2)T`
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