Free Printable Electric potential and capacitors-DPP6

Worksheets

Electric potential and capacitors-DPP6

Total questions: 13

Worksheet time: 7mins

Name

Class

Date

In a charged capacitor, the energy resides

The positive charges

Both the positive and negative charges

The field between the plates

Around the edge of the capacitor plates

1000 small water drops each of radius r and charge coalesce together to form one spherical drop. The potential of the big drop is larger than that of the smaller drop by a factor of

1000

100

The distance between the plates of a parallel plate condenser is 4mm and potential difference is 60volts. If the distance between the plates is increased to 12mm , then

The potential difference of the condenser will become 180volts

The P.D. will become 20volts

The P.D. will remain unchanged

The charge on condenser will reduce to one third

The true statement is, on increasing the distance between the plates of a parallel plate condenser

The electric intensity between the plates will decrease

The electric intensity between the plates will increase

The electric intensity between the plates will remain unchanged

The P.D. between the plates will decrease

Force of attraction between the plates of a parallel plate capacitor is

$\frac{q^2}{2\epsilon_oAK}$

$\frac{q^2}{\epsilon_oAK}$

$\frac{q^{ }}{2\epsilon_oA}$

$\frac{q^2}{2\epsilon_oA^2K}$

A frictionless dielectric plate S is kept on a frictionless table T. A charged parallel plate capacitance C (of which the plates are frictionless) is kept near it. The plate S is between the plates. When the plate S is left between the plates

It will remain stationary on the table

It is pulled by the capacitor and will pass on the other end

It is pulled between the plates and will remain there

All the above statements are false

A capacitor with air as the dielectric is charged to a potential of . If the space between the plates is now filled with a dielectric of dielectric constant 10, the potential difference between the plates will be

1000volts

100volts

10volts

zero

A light bulb, a capacitor and a battery are connected together as shown here, with switch S initially open. When the switch S is closed, which one of the following is true

The bulb will light up for an instant when the capacitor starts charging

The bulb will light up when the capacitor is fully charged

The bulb will not light up at all

The bulb will light up and go off at regular intervals

If the capacity of a spherical conductor is 1 picofarad, then its diameter, would be

$1\times10^{-3}m$

$18\times10^{-3}m$

$1.8\times10^{-5}m$

$18\times10^{-7}m$

10.

As in figure shown, if a capacitor C is charged by connecting it with resistance R, then energy is given by the battery will be

$\frac{1}{2}CV^2$

$more\ than\ \frac{1}{2}CV^2$

$less\ than\ \frac{1}{2}CV^2$

zero

11.

The unit of electric permittivity is

Volt/m²

Joule/coulomb

Farad/m

Henry/m

12.

If a dielectric substance is introduced between the plates of a charged air-gap capacitor. The energy of the capacitor will

Increase

Decrease

Remain unchanged

First decrease and then increase

13.

The energy stored in a condenser is in the form of

Kinetic energy

Potential energy

Elastic energy

Magnetic energy

Reset

Electric potential and capacitors-DPP6

Total questions: 13

Worksheet time: 7mins

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