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

Capacitance of two or more capacitors

Question # 2

In a voltmeter the conduction takes place due to

Question # 3

A charge of 0.1 c accelerated through a potential difference of 1000V acquires kinetic energy

Question # 4

A uniform resistance wire of Length L and diameter d has a resistance R. Another wire of same material has length, 4L and diameter 2d, the resistance will be

Question # 5

In a charged capacitor the energy is stored in

Question # 6

The colour sequence in a carbon resistor in red, brown, orange and silver. The resistance of the resistor is

Question # 7

Coulomb force, when any material medium is placed between two charges

Question # 8

The electric flux is linked with a surface will be maximum when

Question # 9

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

Question # 10

A capacitor is charged with a battery and then it is disconnected. A slab of dielectric is now inserted between the plates, then

Question # 11

Two point charge +3μC and +8μC repel each other with a force of 40 N. If a charge of -5μC is added to each of them, then the force between then will become

Question # 12

Battery is charged in motor cars, which is based on

Question # 13

The resistance of an incandescent lamp is

Question # 14

The liquid which conduct current is known as

Question # 15

The SI unit of conductivity is

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ECAT Physics Chapter 12 Important MCQ's

Sr.# Question Answer
1 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
2 The capacity of a parallel plat capacitor depends on the
A. Type to metal used
B. Thickness of plates
C. Potential applied across the plates
D. Separation between the plates
3 Electron volt is the unit of.
A. Potential difference
B. Energy
C. Resistance
D. Capacitance
4 If the distance of separation between two chares is increased, the electrical potential energy of the system will
A. Increase
B. Decrease
C. May increase or decrease
D. Remain the same
5 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
6 The energy stored in a charge capacitor
A. 1/2CV2
B. 1/2C2V
C. 1/2C/V2
D. None of these
7 The conventional current in a circuit is defined as " current which passes from a point at higher potential to a point at lower potential as if it represent a movement of
A. negative charges
B. positive charges
C. protons
D. electrons
8 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
9 The relation between the charge Q of a parallel plate capacitor and the P.D between its plates is
A. Q=V/C
B. Q=C/V
C. Q=1/2CV
D. Q=CV
10 The SI unit of permitivity is
A. Nm2C2
B. N-1m-2C2
C. NmC2
D. Nm2C-1

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