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A 12pF capacitor is connected to a 50V b...

A 12pF capacitor is connected to a 50V battery. How much electrostatic energy is stored in the capacitor?

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`1.5 xx 10^(-8)` J
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(a) A 900 pF capacitor is charged by 100 V battery [Fig. 2.31(a)]. How much electrostatic energy is stored by the capacitor? (b) The capacitor is disconnected from the battery and connected to another 900 pF capacitor [Fig. 2.31(b)]. What is the electrostatic energy stored by the system?

The plates of a parallel plate capacitor have an area of 90 cm^2 each and are separated by 2.5 mm. The capacitor is charged by connecting it to a 400 V supply. (a) How much electrostatic energy is stored by the capacitor? (b) View this energy as stored in the electrostatic field between the plates, and obtain the energy per unit volume u. Hence arrive at a relation between u and the magnitude of electric field E between the plates.

The plates or a parallel plate capacitor have an area of 90 cm^(2) each and are separated by 2.5 mm. The capacitor is charged by connecting It to a 400 V supply. (a) How much electrostatic energy is stored by the capacitor ? (b) View this energy as stored in the electrostatic field between the plates, und obtain the energy per unit volume "· Hence arrive at a relation between u and the magnitude of electric field E between the plates.

A 900 pF capacitor is charged by 50 V battery. Find the electrostatic potential energy of this capacitor. (2) Now this capacitor is disconnected from the battery and connect to another equivalent capacitor, then what is the total electrostatic energy stored by the system respectively ?

A 600pF capacitor is charged by a 200V supply. It is then disconnected from the supply and is connected to another unchanged 600pF capacitor. How much electrostatic energy is lost in the process.

A 4 muF capacitor is charged by a 200 V supply. It is then disconnected from the supply, and is connected to another uncharged 2 µF capacitor. How much electrostatic energy of the first capacitor is lost in the form of heat and electromagnetic radiation?

How does a capacitor store energy ? And obtain the formula for the energy stored in the capacitor ?

NCERT GUJARATI-ELECTROSTATIC POTENTIAL AND CAPACITANCE -EXERCISES
  1. In a parallel plate capacitor with air between the plates, each plate ...

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  2. Explain what would happen if in the capacitor given in Exercise, a 3 m...

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  3. A 12pF capacitor is connected to a 50V battery. How much electrostatic...

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  4. A 600pF capacitor is charged by a 200V supply. It is then disconnected...

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  5. A cube of side b has a charge q at each of its vertices. Determine the...

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  6. Two tiny spheres carrying charges 1.5 µC and 2.5 µC are located 30 cm ...

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  7. A spherical conducting shell of inner radius r(1) and outer radius r(2...

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  8. (a) Show that the normal component of electrostatic field has a discon...

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  9. A long charged cylinder of linear charged density lambda is surrounded...

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  10. In a hydrogen atom, the electron and proton are bound at a distance of...

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  11. If one of the two electrons of a H(2) molecule is removed, we get a hy...

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  12. Two charged conducting spheres of radii a and b are connected to each ...

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  13. Two charges –q and +q are located at points (0, 0, –a) and (0, 0, a), ...

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  14. Figure 2.32 shows a charge array known as an electric quadrupole. For ...

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  15. An electrical technician requires a capacitance of 2 µF in a circuit a...

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  16. What is the area of the plates of a 2 F parallel plate capacitor, give...

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  17. Obtain the equivalent capacitance of the network in Fig. 2.33. For a 3...

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  18. The plates of a parallel plate capacitor have an area of 90 cm^2 each ...

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  19. A 4 muF capacitor is charged by a 200 V supply. It is then disconnect...

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  20. Show that the force on each plate of a parallel plate capacitor has a ...

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