Electrostatics Test

Result

Electrostatics Test - 6

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Weekly Quiz Competition

Question 1
4 / -1

Two parallel large thin metal sheets have equal surface charge densities (σ = 26.4 × 10^-12 Cm^-2 ) of opposite signs. The electric field between these sheets is

A
1.5 NC ^-1

B
1.5 x 10^-10 NC ^-1

C
3 NC ^-1

D
3x 10^-10 NC ^-1

Solution
Question 2
4 / -1

Potential and field strength at a certain distance from a point charge are 600 V and 200 NC ^-1 . Distance of the point from the charge is

A
2 m

B
4 m

C
8 m

D
3 m

Solution
Question 3
4 / -1

Torque acting on an electric dipole in a uniform electric field is maximum, if the angle between p and E is

A
180°

B
0°

C
90°

D
45°

Solution
Question 4
4 / -1

An electric dipole of the dipole moment p is placed in a uniform electric field E. The maximum torque experienced by the dipole is

A
pE

B

C

D

Solution
Question 5
4 / -1

Dipole is placed parallel to the electric field. If Q is the work done in rotating the dipole by 60°, then work done in rotating 180° is

A
2W

B
3 W

C
4 W

D
W/2

Solution
Question 6
4 / -1

The ratio of electric field and potential (E / V ) at mid-point of electric dipole, for which separation l is

A
1 / l

B
l

C
2 / l

D
None of these

Solution
Question 7
4 / -1

A

B

C

D

Solution
Question 8
4 / -1

What is the nature of Gaussian surface involved in Gauss law of electrostatic?

A
Scalar

B
Electrical

C
Magnetic

D
Vector
Question 9
4 / -1

A
100 unit

B
80 unit

C
180 unit

D
20 unit

Solution
Question 10
4 / -1

The electric charges are distributed in a small volume. The flux of the electric field through a spherical surface of radius 10 cm surrounding the total charge is 20 Vm. The flux over a concentric sphere of radius 20 cm will be

A
20 Vm

B
25 Vm

C
40 Vm

D
200 Vm