Home
Class 12
PHYSICS
In the given circuit, one of the capacit...

In the given circuit, one of the capacitors was connected to a voltage `V_(0)` and then at the moment `t = 0` was shorted by means of the switch. Find the amount of heat generated.

A

`CV_(0)^(2)`

B

`(1)/(5)CV_(0)^(2)`

C

`(1)/(3)CV_(0)^(2)`

D

`(1)/(4)CV_(0)^(2)`

Text Solution

Verified by Experts

The correct Answer is:
D
Potential drop across both capacitors are same
`q=CV_(0)," "u_(i)=(1)/(2)CV_(0)^(2)`
`DeltaH=u_(f)-u_(i)," "u_(f)=(1)/(2)((q//2)^(2))/(C)+(1)/(2)((q//2)^(2))/(C)=(1)/(4)CV_(0)^(2)`
Promotional Banner

Similar Questions

Explore conceptually related problems

In a circuit shown in fig. the capacitance of each capacitor is equal to C and the resistance, to R One of the capacitor was connected to a voltage V_(0) and then at the moment t = 0 was shorted by means of the swich Sw . Find: (a) a current I in the circuit as a function of time t : (b) the amount of generated heat provided a dependence I(t) is known.

An electric circuit shown in figure has a negligibly small active resistance. The left - hand capacitor was charged to a voltage V_(0) and then at the moment t=0 the switch Sw was closed. Find the time dependence of the voltages in left and right capacitors.

An oscillating circuit consists of a capacitor with capacitance C , a coil of inductance L with negligible resistance, and aswitch. With the switch disconnected , the capacitor was charged to a voltage V_(m) and then at the moment t=0 the switch was closed . Find : (a) the current (I(t)) in the circuit as a function of time, (b) the emf of self- inductance in the coil at the moments when the electric energy of the capacitor is equal to that of the current in the coil.

A capacitor of capacitance 5muF is connected to a source of constant emf of 200 V ,Then switch was shifted to contact 2 from contact 1. Find the amount of heat generated in the 400Omega resistance.

In given LR circuit the switch S is closed at time t=0 then

A coil of inductance L=50muH and resistance = 0.5Omega is connected to a battery of emf = 5V. A resistance of 10Omega is connected parallel to the coil. Now, at the same instant the connection of the battery is switched off. Then, the amount of heat generated in the coil after switching off the battery is

In the circuit shown, a capacitor charged to a potential difference V_(0) is connected to an uncharged capacitor through a resistor at t=0 , by closing the switch. Find current in the circuit as function of time. .

Find how the voltage across the capacitor C varies with time t after closing of the switch S_(w) at the moment t=0 . .