Name two basic properties of electric charge.

There are very two basic properties of electric charge. They are: 1. Conservative nature of charge Electric charge of a particle is conservative in nature. It means that the charge can neither be created nor be destroyed 2. Quantization of charge The charge of a system is a fixed quantity. Technically, the charge is a quantized quantity. The net charge of a system can be expressed as the integral multiples of the basic unit of charge

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IMPORTANT

Earn 100

Four equal positive charges each of value $Q$ are arranged at the four corners of a square of side 'a' each. A body of mass $m$ and having a unit positive charge is in equilibrium at a height $h$ above the centre of the square. Find $Q$ .

Important Questions on Electrostatics

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12th Odisha Board

IMPORTANT

Bureau's Higher Secondary Physics Class 12>Chapter 1 - Electrostatics>MODEL QUESTIONS>Q 15

Three charges of magnitude

100 μ C

each are placed at the three corners

A, B & C

of an equilateral triangle measuring

4

meters on each side. If the charges at

A & C

are positive and the charge at

B

is negative, what is the direction and magnitude of total force on the charge at

C

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IMPORTANT

Bureau's Higher Secondary Physics Class 12>Chapter 1 - Electrostatics>MODEL QUESTIONS>Q 16

A charge

q

is placed at the centre of the line joining two equal charges

Q

. show that the system of three charges will be in equilibrium if

q = \frac{Q}{4}

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IMPORTANT

Bureau's Higher Secondary Physics Class 12>Chapter 1 - Electrostatics>MODEL QUESTIONS>Q 17

Three point charges

+ 2 μ C, - 3 μ C & - 3 μ C

are kept at the vertices

A, B, C

respectively of an equilateral triangle of side

20 c m

. What should be the sign and magnitude of charge to be placed at the midpoint

M

of side

B C

so that the charge at

A

reamins in equilibrium ?

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12th Odisha Board

IMPORTANT

Bureau's Higher Secondary Physics Class 12>Chapter 1 - Electrostatics>MODEL QUESTIONS>Q 18

Two identical metallic spheres, having unequal opposite charges are placed at a distance of

0.50 m

apart in air. After bringing them in contact with each other, they are placed at the same distance apart. Now the force of repulsion between them is

0.108 N

. Calculate the final charge on each of them.

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12th Odisha Board

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Bureau's Higher Secondary Physics Class 12>Chapter 1 - Electrostatics>MODEL QUESTIONS>Q 1

Discuss different characteristics of charge. What do you mean by conservation of charge ?

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12th Odisha Board

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Bureau's Higher Secondary Physics Class 12>Chapter 1 - Electrostatics>MODEL QUESTIONS>Q 2

What do you mean by electrification? Discuss various ways of electrifying a body. How can you charge a conductor positively by induction?

MEDIUM

12th Odisha Board

IMPORTANT

Bureau's Higher Secondary Physics Class 12>Chapter 1 - Electrostatics>MODEL QUESTIONS>Q 3

State Coulomb's law in electrostatics and hence define unit of charge in e.s.u and S.I. system.

MEDIUM

12th Odisha Board

IMPORTANT

Bureau's Higher Secondary Physics Class 12>Chapter 1 - Electrostatics>MODEL QUESTIONS>Q 4

State the principle of superposition in electrostatics. Obtain an expression for force on one charge due to all other charges present in its neighbourhood.

Four equal positive charges each of value Q are arranged at the four corners of a square of side 'a' each. A body of mass m and having a unit positive charge is in equilibrium at a height h above the centre of the square. Find Q.

Important Questions on Electrostatics

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Four equal positive charges each of value $Q$ are arranged at the four corners of a square of side 'a' each. A body of mass $m$ and having a unit positive charge is in equilibrium at a height $h$ above the centre of the square. Find $Q$ .