ECAT Pre General Science Physics Chapter 12 Electrostatics Online Test

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  • Chapter NameCh 12 - Electrostatics
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ECAT Pre General Science Physics Chapter 12 Electrostatics Online Test

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ECAT Pre General Science Physics Chapter 12 Electrostatics Online Test

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Question # 1

The unit of conductance is

Question # 2

The relation between the charge Q of a parallel plate capacitor and the P.D between its plates is

Question # 3

An alpha particle is accelerated through a potential difference of 106volt. Its kinetic energy will be

Question # 4

Which of the following does not obey ohm's law?

Question # 5

In a Milikian's oil drop experiment the charge on an oil drop is calculated to be 6.35 x 10-19C. The number of excess electrons on the drop is

Question # 6

The SI unit of electric flux is

Question # 7

The electric field due to an infinite long thin wire at a distance R varies as

Question # 8

Ohm's law states that

Question # 9

An electric dipole is at the centre of a hollow sphere of radius r. The total normal electric flux through the sphere is (here Q is the charge and d is the distance between the two charges of the dipole)

Question # 10

Which one of the following has larger value of relative permitivity Erat room temperature?

Question # 11

The electric intensity at infinite distance from the point charge will be

Question # 12

A (100 W , 200 W) bulb is connected to a 160 V power supply. The power consumption would be

Question # 13

Current provided by a battery is maximum when

Question # 14

At any point on the right bisector of the line joining two equal and opposite charges

Question # 15

The capacity of a parallel plat capacitor depends on the

Question # 16

A 10 F capacitor is charged to a potential difference of 50 V and is connected to another uncharged capacitor in parallel. Now the common potential difference becomes 20 volt.The capacitance of second capacitor is

Question # 17

The electric flux is linked with a surface will be maximum when

Question # 18

What is the current is a 2 x 106ohm resistor having a potential difference of 2 x 103volts?

Question # 19

An electron of charge e coulomb passes through a potential difference of V volts its energy in joules will be

Question # 20

The statement "the electric force of repulsion or attraction between two point charges is directly proportional to the product of the charges and inversely proportional to square of the distance between them" refer to

Question # 21

Ohm is the unit of

Question # 22

The earth's potential is taken as

Question # 23

The SI unit of capacitance is

Question # 24

The minimum charge on any object can not be less than

Question # 25

A point charge A of charge +4μC and another B of charge -1μC are placed in air at a distance 1 m apart. Then the distance of the point on the line joining the charge B, where the resultant electric field is zero, is (in m)

Question # 26

The SI unit of current is

Question # 27

If two bulbs one of 60 W and other of 100 W are connected in parallel, then which one of the following will flow more?

Question # 28

A car battery has e.m.f 12 volt and internal resistance 5 x 10-2ohm. If it draws 60 ampere current, the terminal voltage of the battery will be

Question # 29

Two point charges A and B separated by a distance R attract each other with a force of 12 x 10-3N. The force between A and B when the charges on them are doubled and distance is halved

Question # 30

The SI unit of permitivity is

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