ECAT Pre Computer Science Chapter 12 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 12 Electrostatics

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

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ECAT Physics Chapter 12 Electrostatics

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Question # 1

Electron volt is the unit of.

Question # 2

One coulomb per second is equal to

Question # 3

The fractional change in resistance per kelvin is known as

Question # 4

A medium of dielectric constant 'K' is introduced between the plates of parallel plate condenser. As a result its capcitance

Question # 5

If a 40 watt light bulb burns for 2 hours. how much heat is generated

Question # 6

The speed of randomly moving electrons depends upon

Question # 7

When three identical bulbs of 60 watt, 200 volt rating are connected in series to a 200 volt supply, the power drawn by them will be

Question # 8

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

Question # 9

Potentiometer is more sensitive than voltmeter, because

Question # 10

Heating effect caused by an electric circuit is written

Question # 11

Solar cell converts sunlight directly into

Question # 12

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

Question # 13

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

Question # 14

The resistance of the given conductor can be increased by

Question # 15

The concept of field theory was put forward by

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ECAT Physics Chapter 12 Important MCQ's

Sr.# Question Answer
1 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
2 The thermistors are usually made of
A. Metals with low temperature coefficient of resistivity
B. Metals with high temperature coefficient of resistivity
C. Metal oxides with high temperature coefficient of resistivity
D. Semi conducting materials having low temperature coefficient of resistivity
3 A piece of fuse wire melts when a current of 15 ampere flows through it. With this current. If it dissipates 22.5 W, the resistance of fuse wire will be
A. Zero
B. 10Ω
C. 1Ω
D. 0.10Ω
4 Current provided by a battery is maximum when
A. Internal resistance equal to external resistance
B. Internal resistance is greater than external resistance
C. Internal resistance is less then external resistance
D. None of these
5 A (100 W , 200 W) bulb is connected to a 160 V power supply. The power consumption would be
A. 64 W
B. 80 W
C. 100 W
D. 125 W
6 The liquid which conduct current is known as
A. heating effect
B. chemical energy
C. electrolyte
D. ohm's law
7 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
A. 7.20 N
B. 11.25 N
C. 22.50 N
D. 45.00
8 Potentiometer is more sensitive than voltmeter, because
A. Voltmeter has a very high resistance
B. Voltmeter has a very low resistance
C. Potentiometer does not draw any current from a source of unknown potential difference
D. Potentiometer is sensitive
9 Three resistors of resistance 2,3 and 6 ohms are connected in parallel, their equivalent resistance is
A. 11.0 ohm
B. 1.0 ohm
C. 7.0 ohm
D. 3.0 ohm
10 If the resistance of 2 ohm and 4 ohm are connected in parallel, the equivalent resistance will be
A. 6 ohm
B. 4 ohm
C. zero ohm
D. 1.33 ohm

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