Question 3 of 180
A parallel plate capacitor is charged to and battery is disconnected. A dielectric slab of constant and thickness is inserted. New potential difference is:
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Answer: (C)
. Since is constant, .
Capacitors
JEE Main level, single correct, medium
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More Physics practice
- CapacitorsTwo identical capacitors each of capacitance are connected in parallel and charged to . The total energy stored in the combination is (in J):
- CapacitorsThe equivalent capacitance of three capacitors of each connected in series is:
- CapacitorsA parallel plate air capacitor is connected to a battery. The plates are pulled apart at uniform speed . If is the separation between the plates at any instant, then the time rate of change of electrostatic energy of the capacitor is proportional to , where is _____.
- CapacitorsIdentify the correct statements :
A. Effective capacitance of a series combination of capacitors is always smaller than the smallest capacitance of the capacitor in the combination.
B. When a dielectric medium is placed between the charged plates of a capacitor, displacement of charges cannot occur due to insulation property of dielectric.
C. Increasing of area of capacitor plate or decreasing of thickness of dielectric is an alternate method to increase the capacitance.
D. For a point charge, concentric spherical shells centered at the location of the charge are equipotential surfaces.
Choose the correct answer from the options given below : - CapacitorsThe charge stored by the capacitor in the given circuit in the steady state is .
- CapacitorsUsing a battery, a 100 pF capacitor is charged to 60 V and then the battery is removed. After that, a second uncharged capacitor is connected to the first capacitor in parallel. If the final voltage across the second capacitor is 20 V, its capacitance is : (in pF)
JEE Main Physics practice question on Capacitors, with the answer and a step-by-step solution. Scan a question from your own book or paper to get a whiteboard video.