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)=I_0 cos (\omegat),with I_0=IA and \omega=500rad/s starts flowing in it with the initial direction shown in the figure.At t=\frac{7\pi}{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\muF,R=10\Omega and the battery is ideal with emf of 50 V, identify the correct statement(s). [JEE Adv 2014 P1]

Magnitude of the maximum charge on the capacitor before t=\frac{7\pi}{6\omega} is 1\times10^{-3}C

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

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

Alternating Current

Section: Physics

Question : 7 of 13

Marks: +1, -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 (ωt),with I0=IA and ω=500rad/s starts flowing in it with the initial direction shown in the figure.At t=

7π

6ω

, 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=20μF,R=10Ω and the battery is ideal with emf of 50 V, identify the correct statement(s).

[JEE Adv 2014 P1]

Magnitude of the maximum charge on the capacitor before t=
7π
6ω
is 1×10−3C
The current in the left part of the circuit just before t=
7π
6ω
is clockwise
Immediately after A is connected to D,the current in R is 10 A
Q=2×10−3C

Validate

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