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

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

Question # 2

The energy stored in a charge capacitor

Question # 3

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

Question # 4

Which of the following represents an electric current?

Question # 5

A condenser of capacity 50μF is charged to 10 V.The energy stored is

Question # 6

Heating effect caused by an electric circuit is written

Question # 7

Physicist George Simon ohm was a

Question # 8

The charge carriers in electrolyte are positive and negative

Question # 9

One coulomb per second is equal to

Question # 10

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 # 11

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

Question # 12

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

Question # 13

The capacity of a parallel plat capacitor depends on the

Question # 14

If the length of the conductor is double and its cross sectional area is halved, its conductance will

Question # 15

Taking the earth to be a spherical conductor of diameter 12.8 x 103km. Its capacity will be

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ECAT Physics Chapter 12 Important MCQ's

Sr.# Question Answer
1 In case of a parallel plate capacitor if the plate separation is doubled and plate area is halved, the capacitance becomes
A. Four-fold
B. One-half
C. One-fourth
D. Zero
2 A piece of fuse wire melts when a current of 15 ampere flows through it. With this current. If it dissipates 22.5 W, the resistance of fuse wire will be
A. Zero
B. 10Ω
C. 1Ω
D. 0.10Ω
3 The electric flux from a closed surface
A. Is independent of the shape of the surface
B. Depends on the charge enclosed by the surface
C. Both a and b
D. None of the above
4 Two conductors having the same type of charges are connected by a conducting wire. There would not be any amount of charges on them if
A. They have the same potential
B. They have the same amount of charge
C. They have the same capacity
D. They have the same shape
5 A point charge A of charge +4μC and another B of charge -1μC are placed in air at a distance 1 m apart. Then the distance of the point on the line joining the charge B, where the resultant electric field is zero, is (in m)
A. 2
B. 1
C. 0.5
D. 1.5
6 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
7 A metal plate of thickness half the separation between the capacitor plates of capacitance C is inserted. The new capacitance is
A. C
B. C/2
C. Zero
D. 2C
8 The material in the form of wire or rod or plate which leads the current into or cut of the electrolyte is known as
A. voltmeters
B. resistance
C. electrode
D. current
9 Resistance of a conductor depends upon
A. the quantity of current passing through it
B. the voltage applied between its end
C. its dimensions, physical state and nature of its material
D. all of the above
10 The unit of resistivity is
A. ohm
B. ohm-m2
C. ohm-meter
D. ohm-m-1

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