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

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

Question # 2

Ohm established a relation between

Question # 3

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

Question # 4

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 # 5

Thermocouple is an arrangement of two different metals

Question # 6

Surface density of charge is defined as

Question # 7

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

Question # 8

One joule is equal to

Question # 9

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

Question # 10

If the distance between the plates of a parallel plate condenser of capacity 10μF is doubled then new capacity will be

Question # 11

If the resistance of 2 ohm and 4 ohm are connected in parallel, the equivalent resistance will be

Question # 12

If we plot graph between potential difference (V) and current (I) obeying ohm's law, it will give us

Question # 13

A current of 1.6 A is passed through a solution of CuSO4. How many Cu2+ions are liberated in one minute?

Question # 14

The graphical representation of ohm's law is

Question # 15

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)

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ECAT Physics Chapter 12 Important MCQ's

Sr.# Question Answer
1 Coulomb's force between two point charges depends upon
A. Magnitude of charges
B. Distance between them
C. Medium in which they are located
D. All of the above
2 A 100 W, 200 V bulb is connected to a 160 volts supply. The actual power consumption would be
A. 64 W
B. 80 W
C. 100 W
D. 125 W
3 Some charge is being given to a conductor. Then its potential
A. Is maximum at surface
B. Is maximum at centre
C. Is remain same throughout the conductor
D. Is maximum somewhere between surface and centre
4 An alpha particle is accelerated through a potential difference of 106volt. Its kinetic energy will be
A. 1 MeV
B. 2 MeV
C. 4 MeV
D. 8 MeV
5 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
6 Which one of the following causes production of heat when current is set up in a wire?
A. Fall of electrons from higher orbits to lower orbits
B. Inter-atomic collisions
C. Inter-electron collisions
D. Collisions of conduction electron with atoms
7 Taking the earth to be a spherical conductor of diameter 12.8 x 103km. Its capacity will be
A. 711μF
B. 611μF
C. 811μF
D. 511μF
8 An electric charge at rest is
A. Only an electric field
B. Only a magnetic field
C. Both electric and magnetic fields
D. None of the above
9 The dot product of electric field intensity E and vector area A is called
A. Electric potential
B. Electric flux
C. Electric field
D. Magnetic field
10 The statement "the electric force of repulsion or attraction between two point charges is directly proportional to the product of the charges and inversely proportional to square of the distance between them" refer to
A. Coulomb's law
B. Gauss's law
C. Biot-Sarwat law
D. Ampere's law

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