ECAT Pre General Science Physics Chapter 12 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 12 Electrostatics

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

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ECAT Pre General Science Physics Chapter 12 Electrostatics

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Question # 1

The liquid which conduct current is known as

Question # 2

The relation between charge 'Q' and current 'I' is given by

Question # 3

Specific resistance of a wire depends upon

Question # 4

In a building, there are 15 bulbs of 40 watts, 5 bulbs of 100 watts, 5 fans of 80 watts and a heater of 1 kilowatt. The voltage of the electric main is 220 volts. The minimum efficiency of the main fuse of the building will be

Question # 5

The substances whose resistance decreases with the increase in temperature these substances have coefficient of

Question # 6

The graphical representation of ohm's law is

Question # 7

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

Question # 8

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 # 9

The value of electrical constant of proportionality k is

Question # 10

Ohm is the unit of

Question # 11

Thermocouple is an arrangement of two different metals

Question # 12

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

Question # 13

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

Question # 14

Resistance of a conductor is increased, the currant will

Question # 15

Capacitance of two or more capacitors

Question # 16

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

Question # 17

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

Question # 18

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

Question # 19

The current through a metallic conductor is due to the motion of

Question # 20

The ohm's is defined as

Question # 21

Electron volt is the unit of.

Question # 22

A conducting wire is drawn to double its length. Final resistivity of the material will be

Question # 23

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

Question # 24

The fractional change in resistance per kelvin is known as

Question # 25

A capacitor of capacity 1μF is charged to 1 KV. The energy stored in J

Question # 26

The charge carriers in gases are

Question # 27

Which of the following represents an electric current?

Question # 28

If the distance between the plates of a parallel plate condenser of capacity 10μF is doubled then new capacity will be

Question # 29

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

Question # 30

When a dielectric material is introduced between the plates of a charged condenser the electric field between the plates

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ECAT Physics Chapter 12 Important MCQ's

Sr.# Question Answer
1 Resistance of a conductor is increased, the currant will
A. Decrease
B. Increase
C. Remain the same
D. None of these
2 The SI unit of permitivity is
A. Nm2C2
B. N-1m-2C2
C. NmC2
D. Nm2C-1
3 An electron of charge e coulomb passes through a potential difference of V volts its energy in joules will be
A. V/e
B. eV
C. e/V
D. V
4 The conductivity of a superconductor is
A. Infinite
B. Very large
C. Very small
D. Zero
5 The unit of conductance is
A. ohm
B. meter
C. mho
D. ohm-meter
6 An alpha particle is accelerated through a potential difference of 106volt. Its kinetic energy will be
A. 1 MeV
B. 2 MeV
C. 4 MeV
D. 8 MeV
7 Solar cell converts sunlight directly into
A. potential energy
B. thermal energy
C. mechanical energy
D. electrical energy
8 The capacitance of a parallel plate capacitor depends upon
A. Area of the plates
B. Separation between the plates
C. Medium between the plates
D. All of the above
9 The minimum charge on any object can not be less than
A. 1.6 x 10-19C
B. 3.2 x 10-19C
C. 1.0 C
D. 4.8 x 10-19C
10 If an electron of charge 'e' is accelerated through a potential difference V., it will acquire energy
A. Ve
B. V/e
C. e/V
D. 2Ve

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