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

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

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 potential difference across the conductors should be maintained constant by connecting the ends of wire to the terminal of a device called a source of

Question # 4

Solar cell converts sunlight directly into

Question # 5

The current through a metallic conductor is due to the motion of

Question # 6

Resistance of a conductor is increased, the currant will

Question # 7

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

Question # 8

Specific resistance of a wire depends upon

Question # 9

If we increase the distance between two plates of the capacitor, the capacitance will

Question # 10

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

Question # 11

Battery is charged in motor cars, which is based on

Question # 12

A metal plate of thickness half the separation between the capacitor plates of capacitance C is inserted. The new capacitance is

Question # 13

The electric field will be uniform

Question # 14

The ratio of the gravitational force Fgto the electrostatic force Febetween two electrons at the same distance apart is approximately

Question # 15

If the two charges in Coulomb's law have double distance between them, then electric force

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ECAT Physics Chapter 12 Important MCQ's

Sr.# Question Answer
1 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
2 The unit of resistivity is
A. ohm
B. ohm-m2
C. ohm-meter
D. ohm-m-1
3 Battery is charged in motor cars, which is based on
A. Chemical effect
B. Magnetic effect
C. Electric effect
D. None
4 A 60 W bulb operates on 220 V supply. The current flowing through the bulb is
A. 11/3 A
B. 3 A
C. 3/11 A
D. 6
5 Electron volt is the unit of.
A. Potential difference
B. Energy
C. Resistance
D. Capacitance
6 Capacitance of two or more capacitors
A. Increases in series combination
B. Increases in parallel combination
C. Remains unchanged
D. None of the above
7 A sheet of aluminium foil of negligible thickness is introduced between the plates of a capacitor. The capacitance of the capacitor
A. Increases
B. Decreases
C. Remain unchanged
D. Becomes infinite
8 The electric intensity at infinite distance from the point charge will be
A. Infinite
B. Positive
C. Zero
D. Negative
9 Surface density of charge is defined as
A. Charge per unit volume
B. Charge per unit length
C. Charge per unit area
D. Charge per unit mass
10 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

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