ECAT Pre General Science Physics Chapter 12 Electrostatics

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  • Chapter NameCh 12 - Electrostatics

ECAT Pre General Science Physics Chapter 12 Electrostatics

  • Total Questions30

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ECAT Pre General Science Physics Chapter 12 Electrostatics

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Question # 1

Ohm established a relation between

Question # 2

If 2.2 kilowatt power is transmitted through 1 10 ohm line at 22000 volt, the power loss in the form of heat will be

Question # 3

Heating effect caused by an electric circuit is written

Question # 4

Electron volt is the unit of

Question # 5

Which one of the following causes production of heat when current is set up in a wire?

Question # 6

The force of repulsion between two point charges is F, when these are at a distance 0.1 m apart. Now the point charges are replaced by sphere of radii 5 cm each having the same charge as that of the respective point charges. The distance between their centre is again kept 0.1 m ; then the force of repulsion will

Question # 7

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 # 8

A current of 1.6 A is passed through a solution of CuSO4. How many Cu2+ions are liberated in one minute?

Question # 9

If one volt is needed to cause a current of one ampere to flow in a conductor, its resistance is

Question # 10

A certain charge liberates 0.8 g of oxygen. The same charge will liberate. how many g of silver?

Question # 11

In a charged capacitor the energy is stored in

Question # 12

A charge of 0.1 c accelerated through a potential difference of 1000V acquires kinetic energy

Question # 13

If 2.2 kilowatt power is transmitted through a 10 ohm line at 22000 volt, the power loss in the form of heat will be

Question # 14

Three resistance 500,500 and 50 ohms are connected in series across 555 volts mains. The current flowing through them will be

Question # 15

Two electric bulbs of 200 W and 100 W have same voltage. If R1and R2be their resistance respectively then

Question # 16

If the distance of separation between two chares is increased, the electrical potential energy of the system will

Question # 17

The minimum resistance that can be obtained by connecting 5 resistance of 1/4Ωeach is

Question # 18

Surface density of charge is defined as

Question # 19

If the length of the conductor is double and its cross sectional area is halved, its conductance will

Question # 20

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

Question # 21

The ohm's is defined as

Question # 22

Which of the following represents an electric current?

Question # 23

The material in the form of wire or rod or plate which leads the current into or cut of the electrolyte is known as

Question # 24

The capacitance of a parallel plate capacitor depends upon

Question # 25

The charge per unit time through any cross-section of a conductor is called

Question # 26

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 # 27

Physicist George Simon ohm was a

Question # 28

If electric and gravitational force on an electron in a uniform electric field will be

Question # 29

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

Question # 30

Electric flux is defined by the relation

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