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

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

Question # 2

A 60 W bulb operates on 220 V supply. The current flowing through the bulb is

Question # 3

One joule is equal to

Question # 4

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

Question # 5

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

Question # 6

The electric potential at the surface of an atomic nucleus (Z = 50) of radius 9.0 x 10-15 is

Question # 7

If 2.2 kilowatt power is transmitted through 1 10 ohm line at 22000 volt, the power loss in the form of heat will be

Question # 8

The electric intensity outside the two oppositely charged parallel metal plates is

Question # 9

If 2.2 kilowatt power is transmitted through a 10 ohm line at 22000 volt, the power loss in the form of heat will be

Question # 10

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 # 11

Solar cell converts sunlight directly into

Question # 12

The resistance of an incandescent lamp is

Question # 13

Which one of the following causes production of heat when current is set up in a wire?

Question # 14

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

Question # 15

Some charge is being given to a conductor. Then its potential

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ECAT Physics Chapter 12 Important MCQ's

Sr.# Question Answer
1 The SI unit of permitivity is
A. Nm2C2
B. N-1m-2C2
C. NmC2
D. Nm2C-1
2 Resistor is a device which convert electric energy to
A. Heat energy
B. Chemical energy
C. Elastic energy
D. All of the above
3 The SI unit of current is
A. watt
B. coulomb
C. volt
D. ampere
4 The graphical representation of ohm's law is
A. hyperbola
B. straight line
C. ellipse
D. parabola
5 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
6 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
A. power
B. current
C. resistance
D. temperature
7 The electric field will be uniform
A. Near a positive point charge
B. Near a negative point charge
C. Between two oppositely charged parallel metal plates
D. None of above
8 Resistance of a conductor is increased, the currant will
A. Decrease
B. Increase
C. Remain the same
D. None of these
9 Electron volt is the unit of.
A. Potential difference
B. Energy
C. Resistance
D. Capacitance
10 The charge per unit time through any cross-section of a conductor is called
A. capacitance
B. electric power
C. current
D. potential difference

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