Question

The coil of a moving coil meter has 100 turns, is 40 mm long and 30 mm wide. The control torque is 240 x 10¯⁶ N-m on full scale. If B = 1 Wb/m², range of meter is

a.

1 mA

b.

2 mA

c.

3 mA

d.

4 mA

Answer: (b).2 mA

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Q. The coil of a moving coil meter has 100 turns, is 40 mm long and 30 mm wide. The control torque is 240 x 10¯⁶ N-m on full scale. If B = 1 Wb/m², range of meter is

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