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

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

Question # 2

The fractional change in resistance per kelvin is known as

Question # 3

The electric field will be uniform

Question # 4

Electric flux is defined by the relation

Question # 5

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 # 6

If we increase the distance between two plates of the capacitor, the capacitance will

Question # 7

Two point charges A and B separated by a distance R attract each other with a force of 12 x 10-3N. The force between A and B when the charges on them are doubled and distance is halved

Question # 8

The electric field due to an infinite long thin wire at a distance R varies as

Question # 9

One electron volt is equal to

Question # 10

The unit of resistance is

Question # 11

The speed of randomly moving electrons depends upon

Question # 12

Resistance of a conductor depends upon

Question # 13

The value of electrical constant of proportionality k is

Question # 14

Electron volt is the unit of

Question # 15

The SI unit of capacitance is

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ECAT Physics Chapter 12 Important MCQ's

Sr.# Question Answer
1 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
2 Which one of the following is the unit of electric field intensity
A. JC-1
B. Vm-1
C. Cm-1
D. CJ-1
3 Heating effect caused by an electric circuit is written
A. H = I2Rt
B. H = I2R
C. H = IR2t
D. H = IR2
4 A one microfarad capacitor of a TV is subjected to 4000 V potential difference. The energy stored in capacitor is
A. 8 J
B. 16 J
C. 4 x 10-3J
D. 2 x 10-3J
5 A cube of metal is given a positive charge Q. For the above system, which of the following statements is true?
A. Electric potential at the surface of the cube is zero
B. Electric potential within the cube is zero
C. Electric filed is normal to the surface of the cube
D. Electric filed varies within the cube
6 When an electron is accelerated through a P.D. of an one volt, it will acquire energy equal to
A. One joule
B. One erg
C. One electron volt
D. None of these
7 The colour sequence in a carbon resistor in red, brown, orange and silver. The resistance of the resistor is
A. 21 x 103+ 10%
B. 23 x 101+ 10%
C. 21 x 103+ 5%
D. 12 x 103+ 5%
8 When a dielectric material is introduced between the plates of a charged condenser the electric field between the plates
A. Decreases
B. Increases
C. No change
D. May increase or decresase
9 Ohm is the unit of
A. current
B. capacitance
C. energy
D. resistance
10 One moving a charge of 20 coulombs by 2 cm, 2 J of work is done, then the potential difference between the points is
A. 0.1 V
B. 8 V
C. 2 V
D. 0.5 V

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