ECAT Pre Computer Science Chapter 12 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 12 Electrostatics

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

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ECAT Physics Chapter 12 Electrostatics

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Question # 1

The SI unit of electric flux is

Question # 2

One coulomb of charge is created by

Question # 3

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

Question # 4

Thermocouple is an arrangement of two different metals

Question # 5

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

Question # 6

The fractional change in resistance per kelvin is known as

Question # 7

The electric field will be uniform

Question # 8

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

Question # 9

A car battery has e.m.f 12 volt and internal resistance 5 x 10-2ohm. If it draws 60 ampere current, the terminal voltage of the battery will be

Question # 10

The speed of randomly moving electrons depends upon

Question # 11

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

Question # 12

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

Question # 13

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

Question # 14

Electron volt is the unit of.

Question # 15

The value of electrical constant of proportionality k is

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ECAT Class Physics Chapter 12 Important MCQ's

Sr.# Question Answer
1 Three resistance 500,500 and 50 ohms are connected in series across 555 volts mains. The current flowing through them will be
A. 0.52 A
B. 1 mA
C. 0.7 mA
D. 1.4 A
2 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
3 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
4 Which of the following represents an electric current?
A. C-1
B. CS-1
C. J.S-1
D. dynes-1
5 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
6 The electric field due to an infinite long thin wire at a distance R varies as
A. 1/R
B. 1/R2
C. R
D. R2
7 Which one of the following causes production of heat when current is set up in a wire?
A. Fall of electrons from higher orbits to lower orbits
B. Inter-atomic collisions
C. Inter-electron collisions
D. Collisions of conduction electron with atoms
8 One coulomb per second is equal to
A. One volt
B. One ampere
C. One hom
D. One henry
9 The force between two chares 0.06 m apart is 5 N. If each charge is moved towards the other by 0.01 m, then the force between them will become
A. 7.20 N
B. 11.25 N
C. 22.50 N
D. 45.00
10 The graphical representation of ohm's law is
A. hyperbola
B. straight line
C. ellipse
D. parabola

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