ECAT Pre General Science Physics Chapter 12 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 12 Electrostatics

Try The MCQ's Test For ECAT Pre General Science Physics Chapter 12 Electrostatics

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ECAT Pre General Science Physics Chapter 12 Electrostatics

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Question # 1

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

Question # 2

The material in the form of wire or rod or plate which leads the current into or cut of the electrolyte is known as

Question # 3

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

Question # 4

Which one of the following has larger value of relative permitivity Erat room temperature?

Question # 5

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

Question # 6

Capacitance of two or more capacitors

Question # 7

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

Question # 8

Resistance of a conductor depends upon

Question # 9

The SI unit of permitivity is

Question # 10

Heating effect caused by an electric circuit is written

Question # 11

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

Question # 12

If we plot graph between potential difference (V) and current (I) obeying ohm's law, it will give us

Question # 13

An electric dipole is at the centre of a hollow sphere of radius r. The total normal electric flux through the sphere is (here Q is the charge and d is the distance between the two charges of the dipole)

Question # 14

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

Question # 15

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

Question # 16

106electrons are moving through a wire per second, the current developed is

Question # 17

The colour sequence in a carbon resistor in red, brown, orange and silver. The resistance of the resistor is

Question # 18

The unit of intensity of electric field is

Question # 19

The capacity of a parallel plat capacitor depends on the

Question # 20

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

Question # 21

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 # 22

The SI unit of conductivity is

Question # 23

One electron volt is equal to

Question # 24

The SI unit of electric field intensity is

Question # 25

Two electric bulbs of 200 W and 100 W have same voltage. If R1and R2be their resistance respectively then

Question # 26

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

Question # 27

Surface density of charge is defined as

Question # 28

The charge carriers in electrolyte are positive and negative

Question # 29

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

Question # 30

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

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ECAT Physics Chapter 12 Important MCQ's

Sr.# Question Answer
1 Three resistors of resistance 2,3 and 6 ohms are connected in parallel, their equivalent resistance is
A. 11.0 ohm
B. 1.0 ohm
C. 7.0 ohm
D. 3.0 ohm
2 A 50 volt battery is connected across 10 ohm resistor. The current is 4.5 A. The internal resistance of the battery is
A. Zero
B. 0.5Ω
C. 1.1Ω
D. 5.0Ω
3 A wire of radius r has resistance R. If it is stretched to a wire of r/2 radius, then the resistance becomes
A. 2R
B. 4R
C. 16R
D. Zero
4 An electron of charge e coulomb passes through a potential difference of V volts its energy in joules will be
A. V/e
B. eV
C. e/V
D. V
5 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
6 Physicist George Simon ohm was a
A. German physical
B. French physicist
C. Chinese physicist
D. Russian physicist
7 The electrode connected with the positive terminal of the current source is called
A. cathode
B. anode
C. electrolyte
D. position
8 In a charged capacitor the energy is stored in
A. Both in positive and negative charges
B. Positive charges
C. The edges of the capacitor plates
D. The electric field between the plates
9 The liquid which conduct current is known as
A. heating effect
B. chemical energy
C. electrolyte
D. ohm's law
10 Magnetic effect at a point caused due to flow a current depend upon the
A. Quantity of current
B. Distance from current
C. Both the quantity of current and distance from current element
D. None of the all

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