List of top Physics Questions on Alternating current asked in JKCET

If the mains voltage is $ 230\,V $ then the peak voltage approximately is

A resistance of $ 5 \Omega $ is connected in series with a capacitance of $ 1\,mF $ . The combination is connected to $ AC $ source of angular frequency $ 200 \, rad\, s ^{-1} $ . Then

For an ideal step-down transformer, the quantity which is constant for both the coils is

In a transformer the number of primary turns is four times that of the secondary turns. Its primary is connected to an $AC$ source of voltage $V$. Then,

A $50\,Hz\,AC$ signal is applied in a circuit of inductance of $ (1/\pi )H $ and resistance $ 2100\,\Omega $ The impedance offered by the circuit is

What is the resonance frequency of a driven $LCR$ oscillator?

In the case of an inductor

In AC circuit Ohm's law is applicable for

In L-C-R series circuit the resonance condition in terms of capacitive reactance ($X_C$) and inductive reactance ($ X_L)$ is

The current gain a of a transistor is $0.9.$ The transistor is connected to common base configuration. What would be the change in collector current when base current changes by $ 4\,mA $ ?

In a full wave rectifier circuit operating from $ 50\,Hz $ main frequency, the fundamental frequency in the ripple would be