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CBSE - Class 12 Physics Electrostatic Potential and Capacitance Worksheet

A 12pF capacitor is connected to a 50V battery. How much electrostatic energy is stored in the capacitor?

A regular hexagon of side 10 cm has a charge ((5 \mu C)) at each of its vertices. Calculate the potential at the centre of the hexagon.

Three capacitors each of capacitance 9 pF are connected in series. What is the total capacitance of the combination?

A parallel plate capacitor with air between the plates has a capacitance of 8 pF ((1pF = 10^{-12} F)). What will be the capacitance if the distance between the plates is reduced by half, and the space between them is filled with a substance of dielectric constant 6?

Three capacitors each of capacitance 9 pF are connected in series.
(b) What is the potential difference across each capacitor if the combination is connected to a 120 V supply?

Determine the equivalent capacitance between the point A and B of the presented circuit.

$\frac{2}{3} \mu F$

$\frac{4}{3} \mu F$

$\frac{1}{3} \mu F$

$\frac{5}{3} \mu F$

A spherical conductor of radius 12 cm has a charge of ((1.6 \times 10^{-7}))C distributed uniformly on its surface. What is the electric field at a point 18 cm from the centre of the sphere?

Find the equivalent capacitance between the point A and B of the presented figure.

$\frac{34}{7} \mu F$

$\frac{17}{7} \mu F$

$\frac{18}{7} \mu F$

$\frac{19}{7} \mu F$

A parallel plate capacitor with air between the plates has a capacitance of 8 pF ($1$pF = $10^{-12}$ F). What will be the capacitance if the distance between the plates is reduced by half, and the space between them is filled with a substance of dielectric constant 6?

10.

Three capacitors of capacitances 2 pF, 3 pF and 4 pF are connected in parallel. Determine the charge on each capacitor if the combination is connected to a 100 V supply.

11.

What is voltage?

Force required to move electrons

Potential difference between two points

12.

The potential at a point 10cm from an electric dipole of dipole moment 4x10^-10cm inclined at an angle 30º is

312V

-31.2V

31.2V

13.

Three capacitors each of capacitance 9 pF are connected in series.
(a) What is the total capacitance of the combination?

14.

The potential energy of two equal negative point charges of magnitude 2μC placed one meter apart in the air is

0.36J

0.036J

15.

Explain what would happen if in the capacitor given in a parallel plate capacitor with air between the plates, each plate has an area of $6 \times 10^{-3}$ m$^2$ and the distance between the plates is 3 mm. Calculate the capacitance of the capacitor. If this capacitor is connected to a 100 V supply, what is the charge on each plate of the capacitor?, a 3 mm thick mica sheet (of dielectric constant = 6) were inserted between the plates, (a) while the voltage supply remained connected.

16.

A spherical conductor of radius 12 cm has a charge of ((1.6 \times 10^{-7}))C distributed uniformly on its surface. What is the electric field just outside the sphere

17.

Explain what would happen if in the capacitor given, a 3 mm thick mica sheet (of dielectric constant = 6) were inserted between the plates, after the supply was disconnected.

18.

In a parallel plate capacitor with air between the plates, each plate has an area of $6 \times 10^{-3}$ m$^2$ and the distance between the plates is 3 mm. Calculate the capacitance of the capacitor. If this capacitor is connected to a 100 V supply, what is the charge on each plate of the capacitor?

19.

WHEN CHARGE IN MOTION IT PRODUCES

ELECTRIC FIELD

MAGNETIC FIELD

ELECTRIC AND MAGNETIC FIELD

ELECTRIC FIELD , MAGNETIC FIELD AND REDIATES ENERGY

20.

Three capacitors each of capacitance 9 pF are connected in series. What is the potential difference across each capacitor if the combination is connected to a 120 V supply?

Worksheet Answers

Option B

Option A

11.

Option A

12.

Option A

14.

Option D

19.

Option D

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