MCQ
In LCR series AC circuit.
- AIf R is increased current will decrease.
- BIf L is increased current will decrease.
- CIf C is increased current will increase.
- DIf C is increased current will decrease.
✓
Answer
- If R is increased current will decrease.
Explanation:
$\text{I}=\frac{\text{V}}{\text{Z}}=\frac{\text{V}}{\sqrt{\text{R}^2\Big(\omega\text{L }\sim}\frac{1}{\omega\text{C}}\Big)^2}$
By increasing R, current will definitely decrease by change in L or C, current may increase or decrease.
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