ECAT Pre Engineering Physics Chapter 12 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 12 Electrostatics

Try The MCQ's Test For Physics ECAT Pre Engineering Chapter 12 Electrostatics

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Physics ECAT Pre Engineering Chapter 12 Electrostatics

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Question # 1

Coulomb's force between two point charges depends upon

Question # 2

Ohm is the unit of

Question # 3

Ohm's law states that

Question # 4

In a charged capacitor the energy is stored in

Question # 5

The SI unit of permitivity is

Question # 6

The energy stored in a charge capacitor

Question # 7

One joule is equal to

Question # 8

The unit of resistance is

Question # 9

Coulomb force, when any material medium is placed between two charges

Question # 10

One coulomb per second is equal to

Question # 11

The graphical representation of ohm's law is

Question # 12

At ordinary temperature, an increase in temperature increases the conductivity of

Question # 13

The energy required to charge a capacitor of 5μF by connecting D.C. source of 20 KV is

Question # 14

One coulomb of charge is created by

Question # 15

The SI unit of capacitance is

Question # 16

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

Question # 17

A wire is bent into a ring of radius R is given a charge q. The magnitude of the electrical field at the centre of the ring is

Question # 18

A capacitor is charged with a battery and then it is disconnected. A slab of dielectric is now inserted between the plates, then

Question # 19

If the resistance of 2 ohm and 4 ohm are connected in parallel, the equivalent resistance will be

Question # 20

The resistance of the given conductor can be increased by

Question # 21

Two conductors having the same type of charges are connected by a conducting wire. There would not be any amount of charges on them if

Question # 22

A heater coil rated at (1000 W - 200 V) is connected to 110 volt line. What will be the power consumed?

Question # 23

A point charge Q is placed at the mid-point of a line joining two charges. 4q and q. if the net force on charge q is zero. then Q must be equal to

Question # 24

The earth's potential is taken as

Question # 25

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

Question # 26

The ohm's is defined as

Question # 27

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

Question # 28

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

Question # 29

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 # 30

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

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ECAT Physics Chapter 12 Important MCQ's

Sr.# Question Answer
1 If electric and gravitational force on an electron in a uniform electric field will be
A. E=mg/q
B. E=q/mg
C. E=,g/q
D. E=qg/m
2 The electric lines of force are
A. Imaginary
B. Physically existing everywhere
C. Physically existing near the charge
D. All of the above
3 Electric potential of earth is taken to be zero because the earth is good
A. Semiconductor
B. Conductor
C. Insulator
D. Dielectric
4 One electron volt is equal to
A. 1.6 x 1019eV
B. 6.25 x 1018 eV
C. 1.6 x 1018 eV
D. 6.25 x 1019eV
5 The earth's potential is taken as
A. Negative
B. Positive
C. Zero
D. Infinite
6 The capacity of a parallel plat capacitor depends on the
A. Type to metal used
B. Thickness of plates
C. Potential applied across the plates
D. Separation between the plates
7 The SI unit of capacitance is
A. Farad
B. Henry
C. Ohm
D. Volt
8 Electric generators which convert mechanical energy into
A. solar energy
B. thermal energy
C. kinetic energy
D. electrical energy
9 The electric potential at the surface of an atomic nucleus (Z = 50) of radius 9.0 x 10-15 is
A. 9 x 105V
B. 9 V
C. 8 x 106V
D. 80 V
10 Coulomb force, when any material medium is placed between two charges
A. Increases
B. Decreases
C. Remain unchanged
D. None of these

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