Most Important Selected Qs for JEE AdvancedPhysicsCapacitance
In the given circuit diagram, find the heat generated on closing the switch S. (Initially the capacitor of capacitance C is uncharged)
Options
- A3 2 CV ^2
- BCV ^2
- C1 2 CV ^2
- D2 CV ^2
Correct answer
C. 1 2 CV ^2
Step-by-step solution
aligned & v _ i = 1 2 6 5 C ~V ^2 ....(i) & q _ i = 6 5 CV ....(ii) & q _ f = 11 5 CV ....(iii) & U _ f = ( 1 2 6 5 C V^2+ 1 2 C V^2 ) aligned Charge flown from battery = CV Work done = CV ^2 Heat produced H = U + W = [ ( 1 2 6 5 C V^2+ 1 2 C V^2 )- 1 2 6 5 C V^2 ]-C V^2=- 1 2 C V^2