JEE Advanced 2017 Paper 1 Offline

MCQ (More than One Correct Answer)

-1

In the circuit shown, $$L = 1\,\mu H,C = 1\,\mu F\,$$ and $$R = 1\,k\Omega .$$ They are connected in series with an a.c. source $$V = {V_0}\sin \omega t$$ as shown.

Which of the following options is/are correct?

JEE Advanced 2017 Paper 1 Offline Physics - Alternating Current Question 14 English

JEE Advanced 2017 Paper 1 Offline Physics - Alternating Current Question 14 English

The current will be in phase with the voltage if $$\omega = {10^4}$$ $$rad.{s^{ - 1}}$$

The frequency at which the current will be in phase with the voltage is independent of $$R$$

At $$\omega \sim 0$$ the current flowing through the circuit becomes nearly zero

At $$\omega > > {10^6}rad.{s^{ - 1}},$$ the circuit behaves like a capacitor

JEE Advanced 2014 Paper 1 Offline

MCQ (More than One Correct Answer)

-0

At time t = 0, terminal A in the circuit shown in the figure is connected to B by a key and an alternating current I(t) = I₀ cos ($$\omega$$t), with I₀ = 1 A and $$\omega$$ = 500 rad s^-1 starts flowing in it with the initial direction shown in the figure. At $$t = {{7\pi } \over {6\omega }}$$, the key is switched from B to D. Now onwards only A and D are connected. A total charge Q flows from the battery to charge the capacitor fully. If C = 20 $$\mu$$F, R = 10 $$\Omega$$ and the battery is ideal with emf of 50 V, identify the correct statement(s).

JEE Advanced 2014 Paper 1 Offline Physics - Alternating Current Question 10 English

JEE Advanced 2014 Paper 1 Offline Physics - Alternating Current Question 10 English

Magnitude of the maximum charge on the capacitor before $$t = {{7\pi } \over {6\omega }}$$ is 1 $$\times$$ 10^$$-$$3 C

The current in the left part of the circuit just before $$t = {{7\pi } \over {6\omega }}$$ is clockwise

Immediately after A is connected to D, the current in R is 10 A

Q = 2 $$\times$$ 10^$$-$$3 C

IIT-JEE 2012 Paper 2 Offline

MCQ (More than One Correct Answer)

-2

In the given circuit, the AC source has $$\omega$$ = 100 rad/s. Considering the inductor and capacitor to be ideal, the correct choice(s) is(are)

IIT-JEE 2012 Paper 2 Offline Physics - Alternating Current Question 8 English

The current through the circuit, I is 0.3 A.

The current through the circuit, I is 0.3$$\sqrt2$$ A.

The voltage across 100 $$\Omega$$ resistor = 10$$\sqrt2$$ V.

The voltage across 50 $$\Omega$$ resistor = 10 V.

IIT-JEE 2011 Paper 2 Offline

MCQ (More than One Correct Answer)

-2

A series RC-current is connected to AC voltage source. Consider two cases : (A) When C is without a dielectric medium and (B) when C is filled with dielectric of constant 4. The current I_R through the resistor and voltage V_C across the capacitor are compared in the two cases. Which of the following is/are true?

$$I_R^A > I_R^B$$

$$I_R^A < I_R^B$$

$$V_C^A > V_C^B$$

$$V_C^A < V_C^B$$

JEE Advanced Subjects