electrostatics

chapter 1

the property which differentiates the 2 kinds of charge is called

polarity of charge

glass rod and rat fur has which type of charge?

positive charge

silk and plastic rod has which type of charge

negative charge

when a body gives charge

it becomes positively charged

when a body has excess of electrons

When a body possesses an excess of electrons, it acquires a negative charge.

what are conductors? what are its examples

conductors are the substances which allow electricity to pass through them easily. they conduct electricity because they have electrons which are free to move within the material. Examples include metals like copper, aluminum, and silver.

properties of electric charges?

3 properties of charges-

1. additivity of charges

2. Quantisation of charge

3. conservation of charges

answer the following

1. S.I. unit of charge

2. what is 1 micro-coulomb equal to?

3. what is 1milli coulomb equal to?

4. S.I. unit of k

1. Coulomb

2. 10^-6

3. 10^-3

4. newton-m²/ c²

_________coulomb charge is present in 1 cup of water.

1.34 × 10^7

what is torsion balance used for?

for measuring the force between 2 charged spheres and determining the value of the electric charge.

value of k determines the _____ of unit charge.

size

gravitation force is ____ in nature.

attractive

coulomb’s force is_____ in nature.

repulsive