MHT CET · Physics · Alternating Current
When a capacitor is connected in series LR circuit, the alternating current flowing in the circuit.
- A remains constant.
- B increases.
- C increases.
- D decreases.
Answer & Solution
Correct Answer
(B) increases.
Step-by-step Solution
Detailed explanation
Impedance of series LR circuit
\(Z=\sqrt{R^2+X_L^2}\)
When a capacitor is also connected in circuit, Then impedance
\(Z_L=\sqrt{R^2+\left(X_L-X_C\right)^2}\)
Clearly impedance of circuit decreases \(\left(Z_2\(I=\frac{V}{Z} \propto \frac{1}{Z}\) in the circuit increases.
\(Z=\sqrt{R^2+X_L^2}\)
When a capacitor is also connected in circuit, Then impedance
\(Z_L=\sqrt{R^2+\left(X_L-X_C\right)^2}\)
Clearly impedance of circuit decreases \(\left(Z_2
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