Current Electricity – Notes

Electricity – Current Electricity – Basics

Electricity current is uniform flow of charges in a particular direction.

The rate of flow of charge o uniform motion of electrons:

(I = )

Potential difference is the work done in moving a unit charge between two points in an electric field against the direction of force:

(v =  )

Electric resistance is the opposition to the flow of electrons by the conductor.

Factors affecting electric resistance are:

• The length of the conductor
• The cross sectional area of the conductor
• The resistivity of conductor material
• The temperature of the conductor