Home · BITSAT · Physics · Alternating Current

Alternating Current — BITSAT Physics PYQs

20 previous year questions from Alternating Current with answers and solutions. Numbered list, year tags, and one-tap solutions — built for serious JEE / NEET practice.

20 questionsPhysicsSolutions on every page

Find the average value of current shown graphically from t=0 to t=2 ~s .

BITSAT 2024 Solution View → 2

In an ac circuit, an inductor, a capacitor and a resistor are connected in series with X_L=R= X _ C . Impedance of this circuit is :

BITSAT 2024 Solution View → 3

An alternating voltage V(t)=220 100 t volt is applied to a purely resistive load of 50 . The time taken for the current to rise from half of the peak value to the peak value is:

BITSAT 2024 Solution View → 4

In the given circuit, rms value of current (Irms) through the resistor R is :

BITSAT 2023 Solution View → 5

In the circuit shown in the figure, the AC source gives a voltage V=20 (2000 t) neglecting source resistance, the voltmeter and ammeter reading will be

BITSAT 2022 Solution View → 6

An alternating voltage V = V ₀ t is applied across a circuit. As a result, a current I = I ₀ ( t - 2 ) flows in it. The power consumed per cycle is

BITSAT 2021 Solution View → 7

For an RLC circuit driven with voltage of amplitude V_ m and frequency ₀= 1 LC the current exhibits resonance the quality factor, Q is given by

BITSAT 2021 Solution View → 8

In series combination of R, L and C with an A.C. source at resonance, if R =20 ohm , then impedance Z of the combination is

BITSAT 2020 Solution View → 9

A resistor R , an inductor L , a capacitor C and voltmeters V 1 , V 2 and V 3 are connected to an oscillator in the circuit as shown in the adjoining diagram. When the frequency of

BITSAT 2018 Solution View → 10

A resistor of resistance R , capacitor of capacitance C and inductor of inductance L are connected in parallel to AC power source of voltage ₀ t . The maximum current through the r

BITSAT 2016 Solution View → 11

A direct current of 5 ~A is superposed on an alternating current I=10 t flowing through the wire. The effective value of the resulting current will be

BITSAT 2015 Solution View → 12

In the circuit shown below, the ac source has voltage V=20 ( t) volt with =2000 rad / s The amplitude of the current will be nearest to

BITSAT 2015 Solution View → 13

Voltage V and current i in A C circuit are given by V =50 (50 t ) volt, i =50 (50 t + 3 ) mA The power dissipated in the circuit is

BITSAT 2014 Solution View → 14

The impedance of a circuit consists of 3 resistance and 4 reactance. The power factor of the circuit is

BITSAT 2012 Solution View → 15

The r.m.s. value of potential difference V shown in the figure is

BITSAT 2012 Solution View → 16

Which one of the following curves represents the variation of impedance ( Z ) with frequency f in series LCR circuit?

BITSAT 2011 Solution View → 17

An alternating voltage V=V₀ sin ot is appliedacross a circuit. As a result, a current I=I₀ ( t- / 2) flows in it. The power consumed per cycle is

BITSAT 2010 Solution View → 18

A resistance R and inductance L and a capacitor C all are connected in series with an AC supply. The resistance of R is 16 ohm and for a given frequency, the inductive reactance of

BITSAT 2010 Solution View → 19

The instantaneous current from an a.c. source is I =6 314 t . What is the rms value of the current?

BITSAT 2009 Solution View → 20

A coil has resistance 30 ohm and inductive reactance 20 ohm at 50 ~Hz frequency. If an ac source, of 200 volt, 100 ~Hz , is connected across the coil, the current in the coil will

BITSAT 2009 Solution View →

Practice all Alternating Current questions in the app →