1
JEE Advanced 2014 Paper 1 Offline
MCQ (More than One Correct Answer)
+4
-1
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). A
Magnitude of the maximum charge on the capacitor before $$t = {{7\pi } \over {6\omega }}$$ is 1 $$\times$$ 10$$-$$3 C
B
The current in the left part of the circuit just before $$t = {{7\pi } \over {6\omega }}$$ is clockwise
C
Immediately after A is connected to D, the current in R is 10 A
D
Q = 2 $$\times$$ 10$$-$$3 C
2
IIT-JEE 2012 Paper 2 Offline
MCQ (More than One Correct Answer)
+4
-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) A
The current through the circuit, I is 0.3 A.
B
The current through the circuit, I is 0.3$$\sqrt2$$ A.
C
The voltage across 100 $$\Omega$$ resistor = 10$$\sqrt2$$ V.
D
The voltage across 50 $$\Omega$$ resistor = 10 V.
3
IIT-JEE 2011 Paper 2 Offline
MCQ (More than One Correct Answer)
+4
-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 IR through the resistor and voltage VC across the capacitor are compared in the two cases. Which of the following is/are true?

A
$$I_R^A > I_R^B$$
B
$$I_R^A < I_R^B$$
C
$$V_C^A > V_C^B$$
D
$$V_C^A < V_C^B$$
Physics
Mechanics
Electricity
Optics
Modern Physics
Chemistry
Physical Chemistry
Inorganic Chemistry
Organic Chemistry
Mathematics
Algebra
Trigonometry
Coordinate Geometry
Calculus
EXAM MAP
Joint Entrance Examination