Home
Class 12
PHYSICS
Following operations can be performed on...

Following operations can be performed on a capacitor :
X - connect the capacitor to a battery of emf. E.Y - disconnect the battery
Z - reconnect the battery with polarity reversed. W - insert a dielectric slab in the capacitor

A

In XYZ (perform X, then Y, then Z) the stored electric energy remains unchanged and no thermal energy is developed.

B

The charge appearing on the capagitor is greater after the action XWY than after the action XYW.

C

The electric energy stored in the capacitor is greater after the action WXY than after the action XYW .

D

The electric field in the capacitor after the action XW is the same as that after WX.

Text Solution

Verified by Experts

The correct Answer is:
B, C, D
Promotional Banner

Topper's Solved these Questions

  • CAPACITORS

    AAKASH SERIES|Exercise ADDITIONAL PRACTICE EXERCISE (LEVEL - I (MAIN)(Straight Objective Type Questions)|22 Videos

  • CAPACITORS

    AAKASH SERIES|Exercise ADDITIONAL PRACTICE EXERCISE (LEVEL - II LECTURE SHEET (ADVANCED))(Straight Objective Type Questions)|9 Videos

  • CAPACITORS

    AAKASH SERIES|Exercise PRACTICE SHEET (EXERCISE - IV) (LEVEL - II (ADVANCED) (Straight Objective Type Questions )|5 Videos

  • ATOMS

    AAKASH SERIES|Exercise PRACTICE EXERCISE|21 Videos

  • COMMUNICATION SYSTEM

    AAKASH SERIES|Exercise LECTURE SHEET (LEVEL - I) (MAIN) (EXERCISE - IV) (Straight Objective & More than one Correct Answer Type Questions)|20 Videos

Similar Questions

Explore conceptually related problems

On a parallel plate capacitor following operations can be performed . P - connect the capacitor to a battery of emf V Q - disconnect the battery R - reconnect the battery with polarity reversed S - insert a dielectric slab in the capacitor

A capacitor C is charged to a potential V by a battery. It is then disconnected from the battery and again connected with its polarity reversed to the battery

After charging a capacitor the battery is removed. Now by placing a dielectric slab between the plates

A capacitor of capacitance C is charged by connecting it to a battery of emf epsilon. The capacitor is now disconnected and reconnected to the battery with the polarity reversed. Calculate the heat developed in the connecting wires.

A parallel plate capacitor is connected across a battery. Now, keeping the battery connected, a dielectric slab is inserted between the plates. In the process,

Answer the following: (a) Describe briefly the process of transferring charge between the two plates of a parallel plate capacitor when connected to a battery. Derive an expression for the energy stored in a capacitor. (b) A parallel plate capacitor is connected to a battery of potential difference V. It is disconnected from battery and then connected to another uncharged capacitor of the same capacitance. Calculate the ratio of the energy stored in the combination to the initial energy on the single capacitor.

Air filled capacitor is charged by a battery and after charging battery is removed. A slab of dielectric material is inserted in it to fill the space completely . The electric field in the capacitor is

An uncharged capacitor is connected to a battery. Show that half the energy supplied by the battery is lost as heat while charging the capacitor.

Two capacitors of capacitance C and nC are connected in parallel. A battery of emf V is connected across the combination. Now the battery is removed and a dielectric constant K is inserted filling the space between the plates of capacitor of capacitance C. The final potential difference across the system is

A parallel plate air capacitor is connected to a battery. If the plates of the capacitor are pulled farther apart, then state whether the following statements are true or false. a. Strength of the electric field inside the capacitor remains unchanged, if the battery is disconnected before pulling the plates. b. During the process, work is done by the external force applied to pull the plates irrespective of whether the battery is disconnected or not. c. Strain energy in the capacitor decreases if the battery remains connected. .