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

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

Question # 2

The resistance of the given conductor can be increased by

Question # 3

Coulomb's force between two point charges depends upon

Question # 4

Electron volt is the unit of

Question # 5

Ohm's law states that

Question # 6

If a 40 watt light bulb burns for 2 hours. how much heat is generated

Question # 7

The relation V = IR represents

Question # 8

The SI unit of current is

Question # 9

The graphical representation of ohm's law is

Question # 10

Current provided by a battery is maximum when

Question # 11

A wire of radius r has resistance R. If it is stretched to a wire of r/2 radius, then the resistance becomes

Question # 12

The unit of resistance is

Question # 13

One joule is equal to

Question # 14

At any point on the right bisector of the line joining two equal and opposite charges

Question # 15

The potential difference across each resistance in series combination is

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ECAT Physics Chapter 12 Important MCQ's

Sr.# Question Answer
1 The SI unit of electric field intensity is
A. CN-1
B. NC-1or Vm-1
C. JC-1
D. AV-1
2 The conductivity of a superconductor is
A. Infinite
B. Very large
C. Very small
D. Zero
3 The SI unit of current is
A. watt
B. coulomb
C. volt
D. ampere
4 The electric flux from a closed surface
A. Is independent of the shape of the surface
B. Depends on the charge enclosed by the surface
C. Both a and b
D. None of the above
5 A capacitor is charged with a battery and then it is disconnected. A slab of dielectric is now inserted between the plates, then
A. The charge in the plates reduces and potential difference increase
B. Potential difference between the plates increase, stored energy decreases and charge remains the same
C. Potential difference between the plates decreases and charge remains unchanged
D. None of the above
6 The current through a metallic conductor is due to the motion of
A. protons
B. neutrons
C. electrons
D. free electrons
7 Consider a spherical shell of metal at he centre of which a positive point charge is kept
A. The electric filed is zero outside the shell
B. The electric field is zero everywhere
C. The electric field is zero in the region inside the shell
D. The electric field is non-zero in both regions outside and inside the shell
8 A conducting wire is drawn to double its length. Final resistivity of the material will be
A. Double of the original one
B. Half of the original one
C. One fourth of the original one
D. Same as original one
9 The electric intensity at infinite distance from the point charge will be
A. Infinite
B. Positive
C. Zero
D. Negative
10 If a 40 watt light bulb burns for 2 hours. how much heat is generated
A. 288 x 103J
B. 288 x 108J
C. 288 x 105J
D. 288 x 106J

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