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 liquid which conduct current is known as

Question # 2

The resistance of a conductor does not depend on its

Question # 3

In a charged capacitor the energy is stored in

Question # 4

The thermistors are usually made of

Question # 5

One joule is equal to

Question # 6

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

Question # 7

If two bulbs one of 60 W and other of 100 W are connected in parallel, then which one of the following will flow more?

Question # 8

Calculate the amount of charge flowing in 2 minutes in a wire of resistance 10Ωwhen a potential difference of 20 V is applied between its ends

Question # 9

Electron volt is the unit of.

Question # 10

A hollow insulated conduction sphere is given a positive charge of 10μC. What will be the electric field at the centre of the sphere if its radius is 2 meters?

Question # 11

The electric intensity outside the two oppositely charged parallel metal plates is

Question # 12

A conducting wire is drawn to double its length. Final resistivity of the material will be

Question # 13

The resistance of the given conductor can be increased by

Question # 14

One coulomb of charge is created by

Question # 15

Cause of heat production in a current carrying conductor is

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ECAT Physics Chapter 12 Important MCQ's

Sr.# Question Answer
1 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
2 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
3 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
A. 2 R
B. R
C. R/2
D. R/4
4 Which one of the following has larger value of relative permitivity Erat room temperature?
A. Vaccum
B. Air
C. Glass
D. Water
5 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
6 Equal charges are given to two spheres of different radii. The potential will
A. Be more on the smaller sphere
B. Be more on the bigger sphere
C. Be equal on both the sphere
D. Depend on the nature of the material of the sphere
7 A condenser of capacity 50μF is charged to 10 V.The energy stored is
A. 1.25 x 10-3J
B. 3.75 x 10-3J
C. 2.5 x 10-3J
D. 5 x 10-3J
8 Surface density of charge is defined as
A. Charge per unit volume
B. Charge per unit length
C. Charge per unit area
D. Charge per unit mass
9 A 60 W bulb operates on 220 V supply. The current flowing through the bulb is
A. 11/3 A
B. 3 A
C. 3/11 A
D. 6
10 The thermistors are usually made of
A. Metals with low temperature coefficient of resistivity
B. Metals with high temperature coefficient of resistivity
C. Metal oxides with high temperature coefficient of resistivity
D. Semi conducting materials having low temperature coefficient of resistivity

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