MCQ
Hot wire ammeters are used for measuring
- ✓Both $AC$ and $DC$
- BOnly $AC$
- COnly $DC$
- DNeither $AC$ nor $DC$
✓
Answer
Correct option: A.
Both $AC$ and $DC$
a
(a)
(a)
The hot wire ammeter is a device used to measure $AC$ or $DC$ current intensity based on the thermal expansion of a wire that is heated due to the flow of the electric current through it, as the heat produced is proportional to the square of $D C$ or $r m s$ value of $A C$.
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