MCQ
Which instrument is used as the null detector in the Wheatstone bridge?
- AVoltmeter
- BAmmeter
- ✓Galvanometer
- DMultimeter
✓
Answer
Correct option: C.
Galvanometer
A galvanometer is used as the null detector in a Wheatstone bridge. The null point means the situation in which no current flows through the circuit. The galvanometer is used for measuring the current and also to determine the voltage between any two points of the circuit. Galvanometer is used due to its sensitivity and therefore, even small currents can be measured.
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