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

If electric and gravitational force on an electron in a uniform electric field will be

Question # 2

Electric flux is defined by the relation

Question # 3

One electron volt is equal to

Question # 4

If a 40 watt light bulb burns for 2 hours. how much heat is generated

Question # 5

The SI unit of current is

Question # 6

The electric field intensity at a point due to a point charge

Question # 7

The nature of capacity of electrostatic capacitor depends on

Question # 8

The electric intensity outside the two oppositely charged parallel metal plates is

Question # 9

In bringing an electron towards another electron, electrostatic potential energy of system

Question # 10

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

Question # 11

A charge of 0.1 c accelerated through a potential difference of 1000V acquires kinetic energy

Question # 12

Cause of heat production in a current carrying conductor is

Question # 13

The earth's potential is taken as

Question # 14

Coulomb's force between two point charges depends upon

Question # 15

The current through a metallic conductor is due to the motion of

Question # 16

Heating effect caused by an electric circuit is written

Question # 17

A certain charge liberates 0.8 g of oxygen. The same charge will liberate. how many g of silver?

Question # 18

When a dielectric material is introduced between the plates of a charged condenser the electric field between the plates

Question # 19

When an electron is accelerated through a P.D. of an one volt, it will acquire energy equal to

Question # 20

When three identical bulbs of 60 watt, 200 volt rating are connected in series to a 200 volt supply, the power drawn by them will be

Question # 21

Electron volt is the unit of.

Question # 22

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

Question # 23

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

Question # 24

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

Question # 25

The potential difference across each resistance in series combination is

Question # 26

The ratio of the gravitational force Fgto the electrostatic force Febetween two electrons at the same distance apart is approximately

Question # 27

The resistance of the given conductor can be increased by

Question # 28

A capacitor of capacity 1μF is charged to 1 KV. The energy stored in J

Question # 29

The charge per unit time through any cross-section of a conductor is called

Question # 30

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

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ECAT Physics Chapter 12 Important MCQ's

Sr.# Question Answer
1 At ordinary temperature, an increase in temperature increases the conductivity of
A. Conductor
B. Semiconductor
C. Insulator
D. Alloy
2 If the length of the conductor is double and its cross sectional area is halved, its conductance will
A. Increase four fold
B. Become one-fourth
C. Become one-half
D. Remains unchanged
3 Equal charges are given to two spheres of different radii. The potential will
A. Be more on the smaller sphere
B. Be more on the bigger sphere
C. Be equal on both the sphere
D. Depend on the nature of the material of the sphere
4 A medium of dielectric constant 'K' is introduced between the plates of parallel plate condenser. As a result its capcitance
A. Increase k time
B. Decreases k times
C. Decreases 1/K times
D. Remains unchanged
5 The electric field will be uniform
A. Near a positive point charge
B. Near a negative point charge
C. Between two oppositely charged parallel metal plates
D. None of above
6 The electrode connected with the positive terminal of the current source is called
A. cathode
B. anode
C. electrolyte
D. position
7 A wire is bent into a ring of radius R is given a charge q. The magnitude of the electrical field at the centre of the ring is
A. Two
B. 1/2
C. Zero
D. 3/2
8 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
A. 120 C
B. 240 C
C. 20 C
D. 4 C
9 The minimum resistance that can be obtained by connecting 5 resistance of 1/4Ωeach is
A. 4/5Ω
B. 5/4Ω
C. 20Ω
D. 0.05 Ω
10 Solar cell converts sunlight directly into
A. potential energy
B. thermal energy
C. mechanical energy
D. electrical energy

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