A galvanometer coil `5 cm xx 2 cm` with 200 turns is suspended vertically in a field of `5 xx 10^-2 T`. The suspension fibre needs a torque of `0.125 x10^-7 N -m` to twist it through one radian. Calculate the strength of the current required to be maintained in the coil if we require a deflection of `6^@`.

Explanation

To solve the problem step by step, we will use the formula for the torque experienced by a current-carrying coil in a magnetic field. The torque \( \tau \) is given by:

\[ \tau = n \cdot B \cdot I \cdot A \cdot \sin(\phi) \]

Where:
- \( n \) = number of turns in the coil
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