MCQ
If a variable frequency ac source is connected to a capacitor then with decrease in frequency the displacement current will:
- AIncrease
- ✓Decrease
- CRemains constant
- DFirst decrease then increase
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Reason $(R):$ Power factor of series $R-L$ circuit is given by $\cos \theta=\frac{2 R }{\sqrt{ R ^2+\omega^2 L ^2}}$