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

Question # 2

A car battery has e.m.f 12 volt and internal resistance 5 x 10-2ohm. If it draws 60 ampere current, the terminal voltage of the battery will be

Question # 3

If one volt is needed to cause a current of one ampere to flow in a conductor, its resistance is

Question # 4

The electric field due to an infinite long thin wire at a distance R varies as

Question # 5

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

Question # 6

Surface density of charge is defined as

Question # 7

If 2.2 kilowatt power is transmitted through a 10 ohm line at 22000 volt, the power loss in the form of heat will be

Question # 8

The electric lines of force are

Question # 9

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

Question # 10

Taking the earth to be a spherical conductor of diameter 12.8 x 103km. Its capacity will be

Question # 11

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 # 12

The energy required to charge a capacitor of 5μF by connecting D.C. source of 20 KV is

Question # 13

Ohm established a relation between

Question # 14

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

Question # 15

A medium of dielectric constant 'K' is introduced between the plates of parallel plate condenser. As a result its capcitance

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ECAT Physics Chapter 12 Important MCQ's

Sr.# Question Answer
1 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
2 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
3 A charge Q is divided into two parts q and Q - q and separated by a distance R. The force of repulsion between them will be maximum when
A. q = Q/4
B. q = Q/2
C. q = !
D. None of these
4 The concept of field theory was put forward by
A. Franklin
B. Kepler
C. Oersted
D. Michael Faraday
5 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
6 The SI unit of electric flux is
A. Weber
B. Nm2C-1
C. NmC-1
D. Nm-2C
7 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
8 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
A. -10 N
B. +10 N
C. +20 N
D. -20 N
9 The electric field due to an infinite long thin wire at a distance R varies as
A. 1/R
B. 1/R2
C. R
D. R2
10 Electric flux is defined by the relation
A. E.A.
B. E x A
C. E/A
D. none of these

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