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

Ohm established a relation between

Question # 2

Electric generators which convert mechanical energy into

Question # 3

Electron volt is the unit of.

Question # 4

Capacitance of two or more capacitors

Question # 5

The ratio of the gravitational force Fgto the electrostatic force Febetween two electrons at the same distance apart is approximately

Question # 6

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 # 7

In RC series circuit the time during which the capacitor acquires 0.63 times the equilibrium charge is called

Question # 8

The minimum charge on any object can not be less than

Question # 9

The force between two chares 0.06 m apart is 5 N. If each charge is moved towards the other by 0.01 m, then the force between them will become

Question # 10

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

Question # 11

Equal charges are given to two spheres of different radii. The potential will

Question # 12

The resistance of a conductor does not depend on its

Question # 13

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

Question # 14

Some charge is being given to a conductor. Then its potential

Question # 15

The unit of intensity of electric field is

Question # 16

A sheet of aluminium foil of negligible thickness is introduced between the plates of a capacitor. The capacitance of the capacitor

Question # 17

The SI unit of capacitance is

Question # 18

In bringing an electron towards another electron, electrostatic potential energy of system

Question # 19

The capacitance of a parallel plate capacitor depends upon

Question # 20

The colour sequence in a carbon resistor in red, brown, orange and silver. The resistance of the resistor is

Question # 21

A condenser of capacity 50μF is charged to 10 V.The energy stored is

Question # 22

A parallel plate capacitor is first charged and then a dielectric slab is introduced between the plates. The quantity that remains unchanged is

Question # 23

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

Question # 24

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 # 25

Resistance of a conductor depends upon

Question # 26

Physicist George Simon ohm was a

Question # 27

Ohm is the unit of

Question # 28

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

Question # 29

The unit of resistivity is

Question # 30

The capacity of a parallel plat capacitor depends on the

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ECAT Physics Chapter 12 Important MCQ's

Sr.# Question Answer
1 Ohm established a relation between
A. voltage and resistance
B. voltage and charge
C. voltage and current
D. voltage resistance and charge
2 The minimum resistance that can be obtained by connecting 5 resistance of 1/4Ωeach is
A. 4/5Ω
B. 5/4Ω
C. 20Ω
D. 0.05 Ω
3 The resistivity of a substance depends upon the
A. length
B. mass
C. area
D. temperature
4 A conducting wire is drawn to double its length. Final resistivity of the material will be
A. Double of the original one
B. Half of the original one
C. One fourth of the original one
D. Same as original one
5 Electric potential of earth is taken to be zero because the earth is good
A. Semiconductor
B. Conductor
C. Insulator
D. Dielectric
6 Three resistance 500,500 and 50 ohms are connected in series across 555 volts mains. The current flowing through them will be
A. 0.52 A
B. 1 mA
C. 0.7 mA
D. 1.4 A
7 Specific resistance of a wire depends upon
A. Length
B. Cross-section area
C. Mass
D. None
8 The resistance of an incandescent lamp is
A. Smaller when switched on
B. Greater when switched off
C. The same whether it is switch off or switch on
D. Greater when switched on
9 Solar cell converts sunlight directly into
A. potential energy
B. thermal energy
C. mechanical energy
D. electrical energy
10 If a 40 watt light bulb burns for 2 hours. how much heat is generated
A. 288 x 103J
B. 288 x 108J
C. 288 x 105J
D. 288 x 106J

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