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Electric Fields

Coulomb’s Law

Is about the force between two point charges in a vacuum.

coulombs law equation

Electric field strength

The electric field strength E is the force per unit charge, it’s unit is the newton per coulomb (N C-1).

electric field strength

The magnitude of E in a radial field is given by the equation below

electric field strength equation

The magnitude of E in a uniform field is given by the equation below

electric field strength uniform

Electric Potential

Electric Potential

work and Electric Potential

Comparison of electric & gravitational field