Static Electricity

1. Hazards & Applications of Electrostatics

1.1. Electrostatic Hazards

1.1.1. Sparks

1.1.2. Fires

1.2. Photocopier

1.3. Laser Printer

1.4. Electrostatic Paint Spraying

1.5. Electrostatic Precipitator

2. Electric Field

2.1. A region in which an electric charge experiences a force.

2.2. Electric Field Lines

2.2.1. Lines must begin from positive charges and end on negative charges

2.2.2. Number of lines drawn leaving a positive charge or ending on a negative charge is proportional to the magnitude of the charge.

2.2.3. No two field lines can cross each other.

3. Charging by Induction

3.1. Earthing

4. Charges

4.1. Positive

4.2. Negative

4.3. Like charges repel and unlike charges attract.

4.4. SI Unit: Coulomb (C)

5. Charging by Rubbing

5.1. Rubbing Fur on a rod