ECAT Pre Engineering Physics Chapter 12 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 12 Electrostatics

Try The MCQ's Test For Physics ECAT Pre Engineering Chapter 12 Electrostatics

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Physics ECAT Pre Engineering Chapter 12 Electrostatics

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Question # 1

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

Question # 2

The relation between the charge Q of a parallel plate capacitor and the P.D between its plates is

Question # 3

The powers of tow electric bulbs are 100 W and 200 W. Both of them are joined with 220 V mains. The ratio of resistances of their filaments will be

Question # 4

Ohm's law states that

Question # 5

The SI unit of capacitance is

Question # 6

One coulomb per second is equal to

Question # 7

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

Question # 8

Which of the following does not obey ohm's law?

Question # 9

The unit of resistivity is

Question # 10

If 2.2 kilowatt power is transmitted through 1 10 ohm line at 22000 volt, the power loss in the form of heat will be

Question # 11

The relation between charge 'Q' and current 'I' is given by

Question # 12

The electrode connected with the positive terminal of the current source is called

Question # 13

If the distance of separation between two chares is increased, the electrical potential energy of the system will

Question # 14

A parallel plate capacitor is first charged and then a dielectric slab is introduced between the plates. The quantity that remains unchanged is

Question # 15

Force acting upon a charged particle kept between the plates of a charged condenser if F. IF one of the plates of the condenser is removed, force acting on the same will become

Question # 16

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

Question # 17

An electron of charge e coulomb passes through a potential difference of V volts its energy in joules will be

Question # 18

A 50 volt battery is connected across 10 ohm resistor. The current is 4.5 A. The internal resistance of the battery is

Question # 19

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

Question # 20

Electron volt is the unit of

Question # 21

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

Question # 22

The resistance of the given conductor can be increased by

Question # 23

Electron volt is the unit of.

Question # 24

At any point on the right bisector of the line joining two equal and opposite charges

Question # 25

Two point charges A and B separated by a distance R attract each other with a force of 12 x 10-3N. The force between A and B when the charges on them are doubled and distance is halved

Question # 26

One electron volt is equal to

Question # 27

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

Question # 28

One coulomb of charge is created by

Question # 29

In a voltmeter the conduction takes place due to

Question # 30

Coulomb's force between two point charges depends upon

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ECAT Physics Chapter 12 Important MCQ's

Sr.# Question Answer
1 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
2 The resistivity of a substance depends upon the
A. length
B. mass
C. area
D. temperature
3 The electric flux is linked with a surface will be maximum when
A. The surface is held parallel to the electric field
B. The surface is held perpendicular to the electric field
C. The surface makes an angle of 45° with the electric field
D. All of the above
4 Electric generators which convert mechanical energy into
A. solar energy
B. thermal energy
C. kinetic energy
D. electrical energy
5 In a building, there are 15 bulbs of 40 watts, 5 bulbs of 100 watts, 5 fans of 80 watts and a heater of 1 kilowatt. The voltage of the electric main is 220 volts. The minimum efficiency of the main fuse of the building will be
A. 0.4 A
B. 11.4 A
C. 9.8 A
D. 10.6 A
6 The SI unit of electric flux is
A. Weber
B. Nm2C-1
C. NmC-1
D. Nm-2C
7 The electric intensity outside the two oppositely charged parallel metal plates is
A. Maximum
B. Minimum
C. Zero
D. Infinite
8 Electric flux is defined by the relation
A. E.A.
B. E x A
C. E/A
D. none of these
9 At any point on the right bisector of the line joining two equal and opposite charges
A. At electric field is zero
B. The electric potential is zero
C. The electric potential decreases with increasing distance from the centre
D. The electric field is perpendicular to the line joining the charges
10 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?
A. 60 W bulb
B. 100 W bulb
C. Both equally
D. None of these

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