MHT CET202411 May 2024Morning ShiftPhysicsAlternating CurrentActual
With gradual increase in frequency of an a.c. supply, the impedance of an LCR series circuit
Options
- Aincreases.
- Bdecreases.
- Cremains constant
- Dfirst decreases, becomes minimum and then increases.
Correct answer
D. first decreases, becomes minimum and then increases.
Step-by-step solution
We know X _ L = L and X _ C = 1 C When the frequency increases, X _ L increases and X _ C decreases. The impedance of an LCR series circuit decreases at first, becomes minimum and then increases.