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# a coil of 0.1 m * 0.1 m and of 200 turns carry current of 1 milliampere placed in uniform magnetic field of 0.1 Tesla the maximum torque that act on coil is ans. 2*10^-4

Phanindra
226 Points
2 years ago
Torque $\fn_jvn \tau$ = BiAN cos$\fn_jvn \Theta$...
Theta is not given....so theta = 0...
Here, B = magnetic field = 0.1 tesla ..=$\fn_jvn 10^{-1}$
i = current = 1mA = 1× $\fn_jvn 10^{-3}$
A= area = 0.1 × 0.1 = 1× $\fn_jvn 10^{-2}$
N = number of turns..= 200...
Multiply all these...
You will get the answer...Hope you have understood it...