Electrostatics Test

Result

Electrostatics Test - 31

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Question 1
4 / -1

A body can be negatively charged by

A
Giving excess of electrons to it

B
Removing some electrons from it

C
Giving some protons to it

D
Removing some neutrons from it
Question 2
4 / -1

The charge q is projected into a uniform electric field E, work done when it moves a distance Y is

A
qEY

B

C

D

Solution
Question 3
4 / -1

Energy associated with a moving charge is due to a

A
Electric field

B
Magnetic field

C
Both electric field and magnetic field

D
None of the above
Question 4
4 / -1

A total charge Q is broken in two parts Q₁ and Q₂ and they are placed at a distance R from each other. The maximum force of repulsion between them

A

B

C

D

Solution
Question 5
4 / -1

Two identical conducting spheres carrying different charges attract each other with a force F when placed in air medium at a distance `c1\' apart. The spheres are brought into contact and then taken on their original positions. Now the two spheres repel each other with a force whose magnitude is equal to that of the initial attractive force. The ratio between initial charges on the spheres is

A

B

C

D

Solution
Question 6
4 / -1

In nature, the electric charge of any system is always equal to

A
Half integral multiple of the least amount of charge

B
Zero

C
Square of the least amount of charge

D
Integral multiple of the least amount of charge

Solution
Question 7
4 / -1

Two small spheres each having the charge +Q are suspended by insulating threads of length L from a hook. This arrangement is taken in space where there is no gravitational effect, then the angle between the two suspensions and the tension in each will be

A

B

C

D

Solution
Question 8
4 / -1

A

B

C

D

Solution
Question 9
4 / -1

A solid spherical conductor of radius R has a spherical cavity of radius a(a < R) at its centre. A charge +Q is kept at the center. The charge at the inner surface, outer and at a position r (a < r < R) are respectively

A
+Q, – Q, 0

B
–Q, + Q, 0

C
o, –Q, 0

D
+Q, 0, 0

Solution
Question 10
4 / -1

There are two metallic spheres of same radii but one is solid and the other is hollow, then

A
Solid sphere can be given more charge

B
Hollow sphere can be given more charge

C
They can be charged equally (maximum)

D
None of the above