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

Resistance of a conductor depends upon

Question # 2

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

Question # 3

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 # 4

Current provided by a battery is maximum when

Question # 5

The conductivity of a superconductor is

Question # 6

Electron volt is the unit of

Question # 7

The nature of capacity of electrostatic capacitor depends on

Question # 8

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

Question # 9

A heater coil rated at (1000 W - 200 V) is connected to 110 volt line. What will be the power consumed?

Question # 10

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

Question # 11

Specific resistance of a wire depends upon

Question # 12

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

Question # 13

The potential difference across the conductors should be maintained constant by connecting the ends of wire to the terminal of a device called a source of

Question # 14

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

Question # 15

An electric charge at rest is

Question # 16

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

Question # 17

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 # 18

What is the current is a 2 x 106ohm resistor having a potential difference of 2 x 103volts?

Question # 19

The electric flux is linked with a surface will be maximum when

Question # 20

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

Question # 21

In RC series circuit the time during which the capacitor acquires 0.63 times the equilibrium charge is called

Question # 22

The resistance of 20 cm long wire is 10Ω. When the length is changed to 40 cm. The new resistance is

Question # 23

In a charged capacitor the energy is stored in

Question # 24

If an electron of charge 'e' is accelerated through a potential difference V., it will acquire energy

Question # 25

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

Question # 26

The concept of field theory was put forward by

Question # 27

The unit of conductance is

Question # 28

Ohm's law states that

Question # 29

The minimum charge on any object can not be less than

Question # 30

Free electrons are

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ECAT Physics Chapter 12 Important MCQ's

Sr.# Question Answer
1 What is the current is a 2 x 106ohm resistor having a potential difference of 2 x 103volts?
A. 10-1A
B. 10-2A
C. 10-4A
D. 1 mA
2 106electrons are moving through a wire per second, the current developed is
A. 1.6 x 10-19
B. 1 A
C. 1.6 x 10-15 A
D. 106A
3 Ohm is the unit of
A. current
B. capacitance
C. energy
D. resistance
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 A 60 W bulb operates on 220 V supply. The current flowing through the bulb is
A. 11/3 A
B. 3 A
C. 3/11 A
D. 6
6 Specific resistance of a wire depends upon
A. Length
B. Cross-section area
C. Mass
D. None
7 The charge carriers in electrolyte are positive and negative
A. protons
B. electrons
C. ions
D. none of these
8 In a Milikian's oil drop experiment the charge on an oil drop is calculated to be 6.35 x 10-19C. The number of excess electrons on the drop is
A. 3.9
B. 4
C. 4.2
D. 6
9 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
A. 2 R
B. R
C. R/2
D. R/4
10 The conductivity of a superconductor is
A. Infinite
B. Very large
C. Very small
D. Zero

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