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

Battery is charged in motor cars, which is based on

Question # 2

At ordinary temperature, an increase in temperature increases the conductivity of

Question # 3

The electric field will be uniform

Question # 4

The graphical representation of ohm's law is

Question # 5

The unit of resistance is

Question # 6

The unit of resistivity is

Question # 7

Resistance of a conductor depends upon

Question # 8

The relation V = IR represents

Question # 9

The electric intensity at infinite distance from the point charge will be

Question # 10

A medium of dielectric constant 'K' is introduced between the plates of parallel plate condenser. As a result its capcitance

Question # 11

The SI unit of conductivity is

Question # 12

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

Question # 13

A wire is bent into a ring of radius R is given a charge q. The magnitude of the electrical field at the centre of the ring is

Question # 14

A ten ohm electric heater operates on a 110 V line. Calculate the rate at which it develops heat in watts

Question # 15

The charge carriers in electrolyte are positive and negative

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ECAT Physics Chapter 12 Important MCQ's

Sr.# Question Answer
1 Free electrons are
A. tightly bound
B. fixed
C. loosely bound
D. tightly fixed
2 In RC series circuit the time during which the capacitor acquires 0.63 times the equilibrium charge is called
A. Time constant
B. Decay constant
C. None of these
D. All of above
3 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
4 The unit of resistivity is
A. ohm
B. ohm-m2
C. ohm-meter
D. ohm-m-1
5 Two point charges A and B separated by a distance R attract each other with a force of 12 x 10-3N. The force between A and B when the charges on them are doubled and distance is halved
A. 1.92 N
B. 19.2 N
C. 12 N
D. 0.192 N
6 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
7 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
8 A 100 W, 200 V bulb is connected to a 160 volts supply. The actual power consumption would be
A. 64 W
B. 80 W
C. 100 W
D. 125 W
9 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
10 A condenser of capacity 50μF is charged to 10 V.The energy stored is
A. 1.25 x 10-3J
B. 3.75 x 10-3J
C. 2.5 x 10-3J
D. 5 x 10-3J

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