EASY
12th West Bengal Board
IMPORTANT
Earn 100

Can the voltage drop across the inductor or the capacitor in a series circuit be greater than the applied voltage of an ac source? Justify your answer.

Important Questions on Transient Current and Alternating Current
MEDIUM
12th West Bengal Board
IMPORTANT
At resonance what is the value of power factor in the case of series circuit?

EASY
12th West Bengal Board
IMPORTANT
An electrical element when connected to an alternating voltage source, has the current through it leading the voltage by radian. Identify X and write an expression for its reactance.

EASY
12th West Bengal Board
IMPORTANT
How can you improve the quality factor of a series resonance circuit?

EASY
12th West Bengal Board
IMPORTANT
How much power is consumed in a purely inductive A.C. circuit?

EASY
12th West Bengal Board
IMPORTANT
How much power is consumed in a purely capacitive, A.C. circuit?

EASY
12th West Bengal Board
IMPORTANT
An air-core coil and an electric bulb are connected in series across a ac source. The bulb glows with some brightness. How will the glow of bulb be affected on introducing a capacitor in series in the circuit? Justify your answer.

EASY
12th West Bengal Board
IMPORTANT
Which is the best method of reducing current in an ac circuit and why ?

EASY
12th West Bengal Board
IMPORTANT
Why a choke coil cannot be used in dc?
