Module 2 : Electrostatics
Lecture 6 : Quantization Of Charge
 
   Recap
   In this lecture you have learnt the following

Electric charge is quantized in units of electronic charge. Experimentally one can measure this quantum of charge

  by Millikan's oil drop experiment.

In all physical processes and reactions, charge is conserved.

Force between two charges is given by Coulomb's force law. The force is central in nature, proportional to each

  charge and varies inversely as the square of the distance between the charges.

The force on a given charge due to a collection of charges is the vector sum of forces due to each of the charges.

  This is known as the superposition principle.

The space around any charged object is the region in which electric field to such an object is said to exist. A

  charged particle would experience a force when placed in this field. Quantitatively, electric field of an object is given
  by the force that the object exerts on a unit charge placed in the field.

Calculation of electric field due to simple geometries like auniformly charged rod.

One can pictorially represent the electric field by drawing lines of force. These are lines directed along the electric

  field and theirdensity is more in regions where electric field is stronger.
 

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