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 point charge Q is placed at the mid-point of a line joining two charges. 4q and q. if the net force on charge q is zero. then Q must be equal to

Question # 2

The SI unit of electric flux is

Question # 3

The ohm's is defined as

Question # 4

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

Question # 5

A one microfarad capacitor of a TV is subjected to 4000 V potential difference. The energy stored in capacitor is

Question # 6

The SI unit of capacitance is

Question # 7

The relation V = IR represents

Question # 8

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

Question # 9

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

Question # 10

The concept of field theory was put forward by

Question # 11

The SI unit of electric field intensity is

Question # 12

The conductivity of a superconductor is

Question # 13

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

Question # 14

Electron volt is the unit of.

Question # 15

The resistance of an incandescent lamp is

Question # 16

A metal plate of thickness half the separation between the capacitor plates of capacitance C is inserted. The new capacitance is

Question # 17

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

Question # 18

Free electrons are

Question # 19

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

Question # 20

Resistor is a device which convert electric energy to

Question # 21

One joule is equal to

Question # 22

Physicist George Simon ohm was a

Question # 23

Heating effect caused by an electric circuit is written

Question # 24

If the two charges in Coulomb's law have double distance between them, then electric force

Question # 25

Ohm established a relation between

Question # 26

One coulomb of charge is created by

Question # 27

Coulomb's force between two point charges depends upon

Question # 28

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

Question # 29

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 # 30

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

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ECAT Physics Chapter 12 Important MCQ's

Sr.# Question Answer
1 Thermocouple is an arrangement of two different metals
A. To convert heat energy in to electrical energy
B. To produce more heat
C. To convert heat energy into chemical energy
D. To convert electric energy in to heat energy
2 The electric intensity outside the two oppositely charged parallel metal plates is
A. Maximum
B. Minimum
C. Zero
D. Infinite
3 A ten ohm electric heater operates on a 110 V line. Calculate the rate at which it develops heat in watts
A. 1310 W
B. 670 W
C. 810 W
D. 1210 W
4 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
5 Electron volt is the unit of
A. Potential difference
B. Energy
C. Resistance
D. Capacitance
6 The electric flux from a closed surface
A. Is independent of the shape of the surface
B. Depends on the charge enclosed by the surface
C. Both a and b
D. None of the above
7 The unit of intensity of electric field is
A. newton/coluomb
B. jule/coluomb
C. volt x metre
D. newton/metre
8 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
9 If we plot graph between potential difference (V) and current (I) obeying ohm's law, it will give us
A. parabola
B. straight line
C. hyper bola
D. ellipse
10 Specific resistance of a wire depends upon
A. Length
B. Cross-section area
C. Mass
D. None

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