Question 305: AC fundamentals

Question

An electric lamp connected in series with a capacitor and an a.c. source is glowing with certain brightness. On increasing the value of capacitance the brightness of the lamp

Accepted Answer

The capacitive reactance is given by $\mathrm{X}_{\mathrm{C}}=\frac{1}{2 \pi \mathrm{fC}}$ If capacitance $(C)$ is increased $\mathrm{X}_C$ will decrease. The total impedance of the circuit will decrease and hence current and brightness will increase.

Answer

is increased.

Answer

is decreased.

Answer

remains the same.

Answer

becomes zero.

AC fundamentals

An electric lamp connected in series with a capacitor and an a.c. source is glowing with certain brightness. On increasing the value of capacitance the brightness of the lamp

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