WorksheetsElectrostatics Quiz
Total questions: 13
Worksheet time: 13mins
In charging by induction,
body to be charged must be an insulator
body to be charged must be a semiconductor
body to be charged must be a conductor
any type of body can be charged by induction
When an electric dipole p is placed in a uniform electric field E, then at what angle between p and E the value of torque will be maximum?
90°
0°
180°
45°
In a system, n' electric dipole are placed in a closed surface. The value of emergent electric flux from enclosed surface is
qε0
2qε0
2qε0
zero
Gauss' law is true only if force due to charges varies as
r–1
r–2
r–3
r–4
For a given surface, the ∮E.dS=0. From this, we can conclude that
E is necessarily zero on the surface
E is perpendicular to the surface at every point
the total flux through the surface is zero
the flux is only going out of the surface
Which of the following is not a unit of electrostatic potential?
Volt
Joule/coulomb
Newton/Coulomb
Newton-metre/Coulomb
If electrostatic potential at the surface of a Hollow conducting sphere of 5 cm radius is 50 V, then the potential at the centre of sphere will be
10 V
50 V
250 V
zero
A positively charged particle is released from rest in an uniform electric field. The electric potential energy of the charge
remains a constant because the electric field is uniform
increases because the charge moves along the electric field
decreases because the charge moves along the electric field
decreases because the charge moves opposite to the electric field
A parallel-plate capacitor has circular plates of radius 8 cm and plate separation 1 mm. What will be the charge on the plates if a potential difference of 100 V is applied?
1.78 × 10^–8 C
1.78 × 10^–5 C
4.3 × 10^4 C
2 × 10^–9 C
Capacitance between points A and B is
4 μF
12/7 μF
1/4 μF
7/12 μF
A 900pF capacitor is charged by 100 V battery in the figure. How much electrostatic energy is stored by the capacitor?
45 × 10^–6 J
4.5 × 10^6 J
4.5 × 10^–6 J
10.45 × 10^5 J
Which of the following is not the property of equipotential surface?
They do not cross each other.
The rate of change of potential with distance on them is zero.
For a uniform electric field, they are concentric spheres.
They can be imaginary spheres.
A car battery is charged by a 12 V supply and energy stored in it is 7.20 × 10^5 J . The charge passed through the battery is
6.0 × 10^4 C
5.8 × 10^3 J
8.64 × 10^6 J
1.6 × 10^5 C
