D.2 Electric and magnetic fields

Physics 11

Electric field strength

the electrostatic force exerted per unit positive test charge at a point in the field (E = F/q)

Coulomb’s law

The force between two point charges is directly proportional to the product of the charges divided by the square of their distance apart (F = kQq/r2)

Electric potential

the electric potential energy per unit charge

The electric potential at a point

The work done per unit charge in bringing a unit positive charge from infinity to that point.

Electric potential energy between any two points

The negative of the work done by an electric field in moving a point electric charge between the two points

Electric field force between two charged particles Formula

Eelectric field strength of a uniform electric field Formula

Eelectric field strength of a uniform electric field Formula

electric potential energy Formula

electric potential at a point in an electric field Formula

electric field strength formula

work done to move a charge in an electric field formula