The coil of a galvanometer is 0.02 × 0.08 m2. It consists of 200 turns of fine wire and is in a magnetic field of 0.2 tesla. The restoring torque constant of the suspension fibre is 10^(–6) Nm per degree. Assuming the magnetic field to be radial. (i) What is the maximum current that can be measured by the galvanometer, if the scale can accommodate 30^@ deflection? (ii) What is the smallest, current that can be detected if the minimum observable deflection is 0.1^@?

The coil of a galvanometer is 0.02 × 0.08 m2. It consists of 200 turn

1.	The coil of a galvanometer is 0.02 × 0.08 m2. It consists of 200 turns of fine wire and is in a magnetic field of 0.2 tesla. The restoring torque constant of the suspension fibre is 10^(–6) Nm per degree. Assuming the magnetic field to be radial. (i) What is the maximum current that can be measured by the galvanometer, if the scale can accommodate 30^@ deflection? (ii) What is the smallest, current that can be detected if the minimum observable deflection is 0.1^@?
Answer» SOLUTION :(i) `4.69xx10^(-4)` A, (II) `1.56 xx 10^(-6)` A

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