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

A 60 W bulb operates on 220 V supply. The current flowing through the bulb is

Question # 2

Electron volt is the unit of.

Question # 3

Capacitance of two or more capacitors

Question # 4

One joule is equal to

Question # 5

Heating effect caused by an electric circuit is written

Question # 6

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 # 7

Three resistors of resistance 2,3 and 6 ohms are connected in parallel, their equivalent resistance is

Question # 8

A 10 F capacitor is charged to a potential difference of 50 V and is connected to another uncharged capacitor in parallel. Now the common potential difference becomes 20 volt.The capacitance of second capacitor is

Question # 9

The capacity of a parallel plat capacitor depends on the

Question # 10

Electric generators which convert mechanical energy into

Question # 11

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

Question # 12

A ten ohm electric heater operates on a 110 V line. Calculate the rate at which it develops heat in watts

Question # 13

The dot product of electric field intensity E and vector area A is called

Question # 14

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

Question # 15

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

Question # 16

Physicist George Simon ohm was a

Question # 17

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

Question # 18

An electric charge at rest is

Question # 19

The unit of resistance is

Question # 20

Ohm established a relation between

Question # 21

The nature of capacity of electrostatic capacitor depends on

Question # 22

The graphical representation of ohm's law is

Question # 23

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

Question # 24

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 # 25

The relation V = IR represents

Question # 26

In a voltmeter the conduction takes place due to

Question # 27

The concept of field theory was put forward by

Question # 28

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

Question # 29

A closed surface contains two equal and opposite charges. The net electric flux from the surface will be

Question # 30

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

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ECAT Physics Chapter 12 Important MCQ's

Sr.# Question Answer
1 Three resistors of resistance R each are combined in various ways. Which of the following cannot be obtained?
A. 3RΩ
B. 2R/4Ω
C. R/3Ω
D. 2R/3Ω
2 If the resistance of 2 ohm and 4 ohm are connected in parallel, the equivalent resistance will be
A. 6 ohm
B. 4 ohm
C. zero ohm
D. 1.33 ohm
3 Which of the following represents an electric current?
A. C-1
B. CS-1
C. J.S-1
D. dynes-1
4 Solar cell converts sunlight directly into
A. potential energy
B. thermal energy
C. mechanical energy
D. electrical energy
5 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
A. 5 volt
B. 3 volt
C. 15 volt
D. 9 volt
6 The speed of randomly moving electrons depends upon
A. pressure
B. volume
C. temperature
D. mass
7 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
8 The resistance of an incandescent lamp is
A. Smaller when switched on
B. Greater when switched off
C. The same whether it is switch off or switch on
D. Greater when switched on
9 One electron volt is equal to
A. 1.6 x 1019eV
B. 6.25 x 1018 eV
C. 1.6 x 1018 eV
D. 6.25 x 1019eV
10 A point charge A of charge +4μC and another B of charge -1μC are placed in air at a distance 1 m apart. Then the distance of the point on the line joining the charge B, where the resultant electric field is zero, is (in m)
A. 2
B. 1
C. 0.5
D. 1.5

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