Home
Class 12
PHYSICS
In the circuit shown, S(2) is closed fir...

In the circuit shown, `S_(2)` is closed first and is kept closed for a long time. Now `S_(1)` is closed. Just after that instant the current through `S_(1)`is

A

`(epsilon)/(R_(1))` toward right

B

`(epsilon)/(R_(1))` toward left

C

zero

D

`(2epsilon)/(R_(1))`

Text Solution

Verified by Experts

The correct Answer is:
B
(b) Just before `S_(1)` is closed the potential difference across capacitor 2 is 2.
Just after `S_(1)` closed the potential difference across capacitor 1 and 2 are 0 and 2, respectively.
If we take potential of `C` and `D` to be zero than
`V_(A) = epsilon,V_(B) = 2 epsilon`
Since `VB gt VA`, so current will flow
`i= (2 epsilon - epsilon)/(R_(1)) = (epsilon)/(R_(1))` toward left
Promotional Banner

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    A2Z|Exercise Ammeter And Voltmeter|41 Videos

  • CURRENT ELECTRICITY

    A2Z|Exercise Potentiometer And Meter Bridge|45 Videos

  • CURRENT ELECTRICITY

    A2Z|Exercise Kircoff'S Laws And Simple Circuits|64 Videos

  • ATOMIC PHYSICS

    A2Z|Exercise Section D - Chapter End Test|30 Videos

  • DUAL NATURE OF RADIATION AND MATTER

    A2Z|Exercise Section D - Chapter End Test|30 Videos

Similar Questions

Explore conceptually related problems

In the given circuit switch S_(2) is Kept closed and S_(1) is kept open for a very long time such that the system is in steady- state . Now S_(1) is also slosed keeping S_(2) closed. Current passing through R just after S_(1) is closed , is :

In the given circuit switch S_(2) is Kept closed and S_(1) is kept open for a very long time such that the system is in steady- state . Now S_(1) is also slosed keeping S_(2) closed. Current passing through inductor L time after S_(1) is closed , is :

At t=0 switch S_(1) is closed and remains closed for a long time and S_(2) remains open. Now S_(1) is opened and S_(2) is closed. Find out (i) The current through the capacitor immediately after that moment (ii) Charge on the capacitor long after that moment. (iii) Total charge flown through the cell of emf 2_(epsilon) after S_(2) is closed.

At t =0 switch S_1 is closed and remains closed for a long time and S_2 remains open. Now S_1 is opened and S_2 is closed. Find out The current through the capacitor immediately after that moment

In the circuit shown above, when then switch S is closed,

In the circuit shown in the figure, if switches S_(1) and S_(2) have been closed for a long time, then charge on the capacitor.

When the switch S is closed in the given circuit, the current passed through it is