Electrostatics Test

Result

Electrostatics Test - 95

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Weekly Quiz Competition

Question 1
4 / -1

In figure +Q charge is located at one of the edge of the cube, then electric flux through cube due to +Q charge is

A

B

C

D
Question 2
4 / -1

On rotating a point charge having a charge q around acharge Q in a circle of radius r. The work done will be

A

B

C
Zero

D

Solution
Question 3
4 / -1

Two parallel metal plates having charges +Q and –Q face each other at a certain distance between them. If the plates are now dipped in kerosene oil tank, the electric field between the plates will

A
Become zero

B
Increase

C
Decrease

D
Remain same

Solution
Question 4
4 / -1

The number of electrons to be put on a spherical conductor of radius 0.1 m to produce and electric field of 0.036 N/C just above its surface is

A
2.7 × 10⁵

B
2.6 × 10⁵

C
2.5 × 10⁵

D
2.4 × 10⁵

Solution
Question 5
4 / -1

Two plates are 2 cm part, a potential difference of 10 volt is applied between them, the electric fieldbetween the plates is

A
20 N/C

B
500 N/C

C
5 N/C

D
250 N/C

Solution
Question 6
4 / -1

The intensity of the electric field required to keep a water drop of radius 10^–5 cm just suspended in air when charged with one electron is approximately
(g = 10 newton kg/ e = 1.6 × 10^–19 coulomb)

A
260 volt/cm

B
260 newton /coulomb

C
130 volt/cm

D
130 newton /coulomb

Solution
Question 7
4 / -1

A
Is zero

B
Depends upon E

C

D
Depends upon the atomic number of the conducting element
Question 8
4 / -1

A
Zero

B
Infinite

C
27 J

D
100 J

Solution
Question 9
4 / -1

There is an electric field E in X-direction. If the work done moving a charge 0.2C through a distance of 2 m along a line making an angle 60° with the X-axis is 4.0,what is the value of E?

A

B

C

D
None of these

Solution
Question 10
4 / -1

Four equal charges Q are placed at the four corners of a square of each side is \'a\'. Work done in removing acharge –Q from its centre to infinity is

A
0

B

C

D

Solution