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An electrical technician requires a capa...

An electrical technician requires a capacitance of `2 muF` in a circuit across a potential difference of 1 kV. A large number of `1 mu F` capacitors are available to him each of which can withstand a potential difference of not more than 400 V. Suggest a possible arrangement that requires the minimum number of capacitors.

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Eighteen `1muF` capacitors arranged in 6 parallel rows, each row consisting of 3 capacitors in series.
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An electrical technican requires a capacitance fo 2 muF in a circuit across a potential difference of 1kV. A large number 1muF capacitor are available to him each of which can withstand a potential difference of not more than 400V. Suggest a possible arrangement that requires the minimum number of capacitors.

A 100 mu F capacitor is charged to a potential difference of 24 V . It is connected to an uncharged capacitor of capacitance 20 mu F What will be the new potential difference across the 100 mu F capacitor?

A capacitor having a capacitance of 100 mu f is changed to a potential difference of 50V. (a) What is the magnitude of the charge on each plate? (b)The charging battery is disconnected and a dielectric of dielectric constant 2.5 is inserted . Calculate the new potential difference between the plate .

A capacitor is connected to a 12 V battery through a resistance of (10Omega) .It is found that the potential difference across the capacitor rises to 4.0 V in 1(mu)s. find the capacitance of the capacitor.

It is required to construct a 10 mu F capacitor which can be connected across a 200V battery . Capacitance 10 mu F are available but they can withstand only 50V ,Design a combination which can yield the desired result .

A charge of 1 muC is given to one plate of a parallel - plate capacitor of capacitance 0.1muF and a charge of 2 muC is given to the other plate . Find the potential difference developed between the plate .

In a series LCR circuit with an AC source, R = 300 Omega, C = 20 muF, L = 1.0 henry, epsilon_(rms) = 50 V and v = 50/(pi) Hz . Find (a) the rms current in the circuit and (b) the rms potential differences across the capacitor, the resistor and the inductor. Note that the sum of the rms potential differences across the three elements is greater than the rms voltage of the source.

A parallel plate capacitor is charged by a battery after some time, the battery is disconnected and a dielectric slab with its thicnkess equal to the plate so reparation is insected between the plates. How will (i) the capacitance of the capacitor (ii) potential difference between the plates & (iii) the energy sotred in the capacitor the affected ? Q_(0) -charge V_(0) - potential difference, C_(0) - capacitance, E_(0) electric field. U_(0) - energy spred, before the dielectric slab is inserted. Q_(0)=C_(0) V_(0), (V_(0))/(d), U_(0)=(1)/(2)C_(0)V_(0)^(2)?

A cell has an emf of 1.5V and an internal resistance 1 Omega . It is connected to two resistances 2 Omega and 3 Omega in series. Find (a) the current flowing in the circuit, and (b) potential difference across the ends of each resistance.

A copper wire has a resistance of 10Omega and an area of cross-section 1 m m^(2) . A potential difference of 10 V exists across the wire. Calculate the drift speed of electrons if the number of electrons per cubic metre in copper is 8xx10^(28) electrons.

NCERT TAMIL-ELECTROSTATIC POTENTIAL AND CAPACITANCE -EXERCISES
  1. A long charged cylinder of linear charge density lambda is surrounde...

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

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  3. If one of the two electrons of a hydrogen molecule is removed, we get ...

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  4. Two charged conducting spheres of radii a and b are connected to eac...

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

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  6. Figure shows a charge array known as an electric quadrupole. For a poi...

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  7. An electrical technician requires a capacitance of 2 muF in a circuit ...

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

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  9. Obtain the equivalent capacitance of the network in figure below. For ...

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  10. The plates of a paralllel plate capacitor have an area of 90 cm^(2) e...

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

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

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  13. A spherical capacitor consists of two concentric spherical conductors,...

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  14. A spherical capacitor has an inner sphere of radius 12 cm and an oute...

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  15. Answer carefully: (a) Two large conducting spheres carrying charges ...

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  16. A cylindrical capacitor has two co-axial cylinders of length 15 cm a...

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  17. A parallel plate capacitor is to be designed with a voltage rating 1 K...

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  18. Describe schematically the equipotential surfaces corresponding to (...

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  19. A small sphere of radius r(1) and charge q(1) is enclosed by a spheri...

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  20. Answer the following: (a) The top of the atmosphere is at about 400 ...

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