Electrostatics Test

Result

Electrostatics Test - 96

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Weekly Quiz Competition

Question 1
4 / -1

A
Zero

B
E

C

D
Question 2
4 / -1

Angle between equipotential surface and lines of force is

A
Zero

B
180°

C
90°

D
45°
Question 3
4 / -1

Below figures (1) and (2) represent lines of force. Which is correct statement

A
Figure (1) represents magnetic lines of force

B
Figure (2) represents magnetic lines of force

C
Figure (1) represents electric lines of force

D
Both figure (1) and figure (2) represent magnetic lines of force
Question 4
4 / -1

The unit of electric field is not equivalent to

A
N/C

B
J/C

C
V/m

D
J/C–m
Question 5
4 / -1

A flat circular disc has a charge +Q uniformly distributed on the disc. A charge +q is thrown with kinetic energy E towards the disc along its normal axis. The charge q will

A
Hit the disc at the centre

B
Return back along its path after touching the disc

C
Return back along its path without touching the disc

D
Any of the above three situation is possible depending on the magnitude of E
Question 6
4 / -1

At a certain distance form a point charge the electric field is 500 V/m and the potential is 3000 V. What is this distance?

A
6 m

B
12 m

C
36 m

D
144 m

Solution
Question 7
4 / -1

The magnitude of electric field E in the annular region of a charged cylindrical capacitor

A
Is same throughout

B
Is higher near the outer cylinder than near the inner cylinder

C
Varies as 1/r, where r is the distance from the axis

D
Varies as 1/r², where r is the distance from the axis

Solution
Question 8
4 / -1

A metallic solid sphere is placed in a uniform electric field. The lines of force follow the path (s) shown in figure as

A
1

B
2

C
3

D
4
Question 9
4 / -1

The distance between a proton and electron both having a charge 1.6 × 10^–19 of a hydrogen atom is 10^–10metre The value of intensity of electric field produced on electron due to proton will be

A
2.304 × 10^–10 N/C

B
14.4 V/m

C
16 V/m

D
144 × 10¹¹N/C

Solution
Question 10
4 / -1

What is the magnitude of a point charge due to which the electric field 30 cm away has the magnitude 2 newton/coulomb [1 / 4πɛ₀ = 9 × 10⁹Nm²/ C²]?

A
2 × 10^–11 coulomb

B
3 × 10^–11 coulomb

C
5 × 10^–11 coulomb

D
9 × 10^–11 coulomb

Solution