# Measurements

### Explanation of question 8

A moving coil milliammeter has a resistance of 9 and an f.s.d. of 1mA. When used with a shunt of resistance 1 the instrument will read up to

1. 11mA
2. 10mA
3. 9mA
4. 1.11mA

The answer is :- 2

The shunt resistance is one-ninth that of the meter, therfore nine times as much current will flow through the shunt ie 9mA. Thus total current = 9 + 1mA = 10mA

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