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Question
A rectangular loop of area 5m2, has 50 turns and carries a current of 1A. It is hold in a uniform magnetic field of 0.1T, at an angle of 30°. Calculate the torque experienced by the coil.
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Solution
`A = 5 "m"^2`
n = 50
`I = 1A`
`B = 0.1T`
`θ = 30^circ`
`tau = BINAsintheta`
= `0.1 xx 1 xx 50 xx 5 xx sin (30^circ)`
= `5 xx 5 xx 1/2`
`tau = 12.5 "Nm"`
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