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

The SI unit of electric field intensity is

Question # 2

The ohm's is defined as

Question # 3

The earth's potential is taken as

Question # 4

Electric flux is defined by the relation

Question # 5

Which of the following represents an electric current?

Question # 6

Three resistors of resistance 2,3 and 6 ohms are connected in parallel, their equivalent resistance is

Question # 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

Question # 8

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 # 9

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

Question # 10

In a voltmeter the conduction takes place due to

Question # 11

If the two charges in Coulomb's law have double distance between them, then electric force

Question # 12

If an electron of charge 'e' is accelerated through a potential difference V., it will acquire energy

Question # 13

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

Question # 14

A 60 W bulb operates on 220 V supply. The current flowing through the bulb is

Question # 15

The charge carriers in gases are

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ECAT Physics Chapter 12 Important MCQ's

Sr.# Question Answer
1 Electric potential of earth is taken to be zero because the earth is good
A. Semiconductor
B. Conductor
C. Insulator
D. Dielectric
2 Electron volt is the unit of
A. Potential difference
B. Energy
C. Resistance
D. Capacitance
3 An electric dipole is at the centre of a hollow sphere of radius r. The total normal electric flux through the sphere is (here Q is the charge and d is the distance between the two charges of the dipole)
A. Q/4πr2
B. 2Q/4πr2
C. Q.d
D. Zero
4 The relation between charge 'Q' and current 'I' is given by
A. Q = I/t
B. Q = It
C. Q = I2t
D. Q = I2/t
5 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
6 The electric flux is linked with a surface will be maximum when
A. The surface is held parallel to the electric field
B. The surface is held perpendicular to the electric field
C. The surface makes an angle of 45° with the electric field
D. All of the above
7 Electric generators which convert mechanical energy into
A. solar energy
B. thermal energy
C. kinetic energy
D. electrical energy
8 If electric and gravitational force on an electron in a uniform electric field will be
A. E=mg/q
B. E=q/mg
C. E=,g/q
D. E=qg/m
9 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
10 A charge of 0.1 c accelerated through a potential difference of 1000V acquires kinetic energy
A. 200 J
B. 100 J
C. 1000 J
D. 400 J

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