MCQ
In an $A.C$. circuit the current
- AAlways leads the voltage
- BAlways lags behind the voltage
- CIs always in phase with the voltage
- ✓May lead or lag behind or be in phase with the voltage
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Assertion $A:$ Alloys such as constantan and manganin are used in making standard resistance coils.
Reason $R:$ Constantan and manganin have very small value of temperature coefficient of resistance.In the light of the above statements, choose the correct answer from the options given below.

