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

Electric potential of earth is taken to be zero because the earth is good

Question # 2

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 # 3

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

Question # 4

The relation V = IR represents

Question # 5

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

Question # 6

A capacitor is charged with a battery and then it is disconnected. A slab of dielectric is now inserted between the plates, then

Question # 7

In a building, there are 15 bulbs of 40 watts, 5 bulbs of 100 watts, 5 fans of 80 watts and a heater of 1 kilowatt. The voltage of the electric main is 220 volts. The minimum efficiency of the main fuse of the building will be

Question # 8

Coulomb force, when any material medium is placed between two charges

Question # 9

A capacitor of capacity 1μF is charged to 1 KV. The energy stored in J

Question # 10

In bringing an electron towards another electron, electrostatic potential energy of system

Question # 11

In a charged capacitor the energy is stored in

Question # 12

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

Question # 13

The charge per unit time through any cross-section of a conductor is called

Question # 14

Force acting upon a charged particle kept between the plates of a charged condenser if F. IF one of the plates of the condenser is removed, force acting on the same will become

Question # 15

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

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ECAT Physics Chapter 12 Important MCQ's

Sr.# Question Answer
1 Resistance of a conductor is increased, the currant will
A. Decrease
B. Increase
C. Remain the same
D. None of these
2 If a charged spherical conductor of radius 10 cm has potential V at a point distance 5 cm from its centre, then the potential at a point distance 15 cm from the centre will be
A. 1/3 V
B. 2/3 V
C. 3/2 V
D. 3V
3 The electric potential at the surface of an atomic nucleus (Z = 50) of radius 9.0 x 10-15 is
A. 9 x 105V
B. 9 V
C. 8 x 106V
D. 80 V
4 The substances whose resistance decreases with the increase in temperature these substances have coefficient of
A. positive temperature
B. negative temperature
C. absolute temperature
D. zero temperature
5 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
6 The SI unit of capacitance is
A. Farad
B. Henry
C. Ohm
D. Volt
7 A capacitor of capacity 1μF is charged to 1 KV. The energy stored in J
A. 5
B. 0.5
C. 0.005
D. 50
8 The earth's potential is taken as
A. Negative
B. Positive
C. Zero
D. Infinite
9 The resistivity of a substance depends upon the
A. length
B. mass
C. area
D. temperature
10 The electric intensity outside the two oppositely charged parallel metal plates is
A. Maximum
B. Minimum
C. Zero
D. Infinite

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