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

One coulomb of charge is created by

Question # 2

Ohm established a relation between

Question # 3

The force of repulsion between two point charges is F, when these are at a distance 0.1 m apart. Now the point charges are replaced by sphere of radii 5 cm each having the same charge as that of the respective point charges. The distance between their centre is again kept 0.1 m ; then the force of repulsion will

Question # 4

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

Question # 5

Three resistors of resistance 2,3 and 6 ohms are connected in parallel, their equivalent resistance is

Question # 6

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

Question # 7

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

Question # 8

A proton is about 1840 times heavier than an electron. When it is accelerated by a potential difference of 1 KV, its kinetic energy will be

Question # 9

One moving a charge of 20 coulombs by 2 cm, 2 J of work is done, then the potential difference between the points is

Question # 10

Electric flux is defined by the relation

Question # 11

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

Question # 12

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

Question # 13

The energy required to charge a capacitor of 5μF by connecting D.C. source of 20 KV is

Question # 14

The charge carriers in electrolyte are positive and negative

Question # 15

The SI unit of current is

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ECAT Physics Chapter 12 Important MCQ's

Sr.# Question Answer
1 The electric intensity at infinite distance from the point charge will be
A. Infinite
B. Positive
C. Zero
D. Negative
2 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
3 A one microfarad capacitor of a TV is subjected to 4000 V potential difference. The energy stored in capacitor is
A. 8 J
B. 16 J
C. 4 x 10-3J
D. 2 x 10-3J
4 If we increase the distance between two plates of the capacitor, the capacitance will
A. Increase
B. Decrease
C. Remain same
D. First increase then decrease
5 The charge per unit time through any cross-section of a conductor is called
A. capacitance
B. electric power
C. current
D. potential difference
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 One moving a charge of 20 coulombs by 2 cm, 2 J of work is done, then the potential difference between the points is
A. 0.1 V
B. 8 V
C. 2 V
D. 0.5 V
8 The nature of capacity of electrostatic capacitor depends on
A. Shape
B. Size
C. Thickness of plates
D. Area
9 Electron volt is the unit of.
A. Potential difference
B. Energy
C. Resistance
D. Capacitance
10 Which of the following does not obey ohm's law?
A. Copper
B. Al
C. Diode
D. None

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