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

Specific resistance of a wire depends upon

Question # 2

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

Question # 3

Electric flux is defined by the relation

Question # 4

Current provided by a battery is maximum when

Question # 5

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

Question # 6

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

Question # 7

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

Question # 8

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

Question # 9

In case of a parallel plate capacitor if the plate separation is doubled and plate area is halved, the capacitance becomes

Question # 10

The electric lines of force are

Question # 11

The force of repulsion between two point charges is F, when these are at a distance 0.1 m apart. Now the point charges are replaced by sphere of radii 5 cm each having the same charge as that of the respective point charges. The distance between their centre is again kept 0.1 m ; then the force of repulsion will

Question # 12

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

Question # 13

Electric potential of earth is taken to be zero because the earth is good

Question # 14

A charge Q is divided into two parts q and Q - q and separated by a distance R. The force of repulsion between them will be maximum when

Question # 15

A conducting wire is drawn to double its length. Final resistivity of the material will be

Question # 16

The capacity of a parallel plat capacitor depends on the

Question # 17

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

Question # 18

A sheet of aluminium foil of negligible thickness is introduced between the plates of a capacitor. The capacitance of the capacitor

Question # 19

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

Question # 20

The liquid which conduct current is known as

Question # 21

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

Question # 22

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

Question # 23

The electric field will be uniform

Question # 24

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

Question # 25

Three resistance 500,500 and 50 ohms are connected in series across 555 volts mains. The current flowing through them will be

Question # 26

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

Question # 27

The SI unit of current is

Question # 28

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?

Question # 29

The thermistors are usually made of

Question # 30

The potential difference across each resistance in series combination is

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ECAT Physics Chapter 12 Important MCQ's

Sr.# Question Answer
1 Electric flux is defined by the relation
A. E.A.
B. E x A
C. E/A
D. none of these
2 The minimum charge on any object can not be less than
A. 1.6 x 10-19C
B. 3.2 x 10-19C
C. 1.0 C
D. 4.8 x 10-19C
3 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
A. -10 N
B. +10 N
C. +20 N
D. -20 N
4 The SI unit of electric field intensity is
A. CN-1
B. NC-1or Vm-1
C. JC-1
D. AV-1
5 At ordinary temperature, an increase in temperature increases the conductivity of
A. Conductor
B. Semiconductor
C. Insulator
D. Alloy
6 The electric potential at the surface of an atomic nucleus (Z = 50) of radius 9.0 x 10-15 is
A. 9 x 105V
B. 9 V
C. 8 x 106V
D. 80 V
7 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
A. 0.1 watt
B. 1 watt
C. 10 watt
D. 100 watt
8 A charge of 0.1 c accelerated through a potential difference of 1000V acquires kinetic energy
A. 200 J
B. 100 J
C. 1000 J
D. 400 J
9 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
10 One coulomb per second is equal to
A. One volt
B. One ampere
C. One hom
D. One henry

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