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

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

Question # 2

The potential difference across each resistance in series combination is

Question # 3

The minimum charge on any object can not be less than

Question # 4

The electric lines of force are

Question # 5

The resistance of an incandescent lamp is

Question # 6

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 # 7

106electrons are moving through a wire per second, the current developed is

Question # 8

Specific resistance of a wire depends upon

Question # 9

The speed of randomly moving electrons depends upon

Question # 10

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

Question # 11

An electric charge at rest is

Question # 12

Which one of the following has larger value of relative permitivity Erat room temperature?

Question # 13

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

Question # 14

Which one of the following is the unit of electric field intensity

Question # 15

The material in the form of wire or rod or plate which leads the current into or cut of the electrolyte is known as

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ECAT Physics Chapter 12 Important MCQ's

Sr.# Question Answer
1 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
A. 1.92 N
B. 19.2 N
C. 12 N
D. 0.192 N
2 The ohm's is defined as
A. 1 ampere / 1 volts
B. 1 coulomb / 1 volt
C. 1 volt / 1 ampere
D. 1 volt / 1 coulomb
3 Specific resistance of a wire depends upon
A. Length
B. Cross-section area
C. Mass
D. None
4 For two resistance wires joined in parallel, the resultant resistance is 6/5 ohm. When one of the resistance wire breaks, the effective resistance becomes 2 ohm. The resistance of the broken wire is
A. 3/5 ohm
B. 2 ohm
C. 6/5 ohm
D. 3 ohm
5 In a voltmeter the conduction takes place due to
A. Electrons only
B. Holes only
C. Electrons and holes
D. Electrons and ions
6 The speed of randomly moving electrons depends upon
A. pressure
B. volume
C. temperature
D. mass
7 The SI unit of electric flux is
A. Weber
B. Nm2C-1
C. NmC-1
D. Nm-2C
8 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
9 The resistivity of a substance depends upon the
A. length
B. mass
C. area
D. temperature
10 One joule is equal to
A. 1.6 x 1019eV
B. 6.25 x 1018eV
C. 1.6 x 1818eV
D. 6.25 x 1019eV

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