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

A condenser of capacity 50μF is charged to 10 V.The energy stored is

Question # 2

Magnetic effect at a point caused due to flow a current depend upon the

Question # 3

The SI unit of electric flux is

Question # 4

Three resistors of resistance R each are combined in various ways. Which of the following cannot be obtained?

Question # 5

The electric intensity at infinite distance from the point charge will be

Question # 6

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 # 7

Some charge is being given to a conductor. Then its potential

Question # 8

What is the current is a 2 x 106ohm resistor having a potential difference of 2 x 103volts?

Question # 9

An alpha particle is accelerated through a potential difference of 106volt. Its kinetic energy will be

Question # 10

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)

Question # 11

At ordinary temperature, an increase in temperature increases the conductivity of

Question # 12

A (100 W , 200 W) bulb is connected to a 160 V power supply. The power consumption would be

Question # 13

Consider a spherical shell of metal at he centre of which a positive point charge is kept

Question # 14

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 # 15

The minimum resistance that can be obtained by connecting 5 resistance of 1/4Ωeach is

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ECAT Physics Chapter 12 Important MCQ's

Sr.# Question Answer
1 The electric field intensity at a point due to a point charge
A. Falls off inversely as the distance
B. Falls off inversely as the square of distance
C. Remains unchanged with distance
D. Increase directly as square of distance
2 Free electrons are
A. tightly bound
B. fixed
C. loosely bound
D. tightly fixed
3 Current provided by a battery is maximum when
A. Internal resistance equal to external resistance
B. Internal resistance is greater than external resistance
C. Internal resistance is less then external resistance
D. None of these
4 A proton is about 1840 times heavier than an electron. When it is accelerated by a potential difference of 1 KV, its kinetic energy will be
A. 1840 KeV
B. 1/1840 KeV
C. 1 KeV
D. 920 KeV
5 Ohm is the unit of
A. current
B. capacitance
C. energy
D. resistance
6 The charge carriers in gases are
A. electrons
B. ions
C. protons
D. ions and electrons
7 The potential difference across each resistance in series combination is
A. same
B. different
C. zero
D. none of these
8 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
9 In RC series circuit the time during which the capacitor acquires 0.63 times the equilibrium charge is called
A. Time constant
B. Decay constant
C. None of these
D. All of above
10 Electron volt is the unit of
A. Potential difference
B. Energy
C. Resistance
D. Capacitance

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