Static Electricity: Electric Fields

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Electric Field

Region of space in which electric charges at rest experience an electrostatic force

Electric Field Line

The line along which a positive charge would move if placed in the electric field

Electric field lines can be demonstrated by sprinkling semolina on a container of cooking oil and running an electric current through two metal plates in the container

The semolina will form parallel lines between the plates showing the electric field pattern

Electric Field Strength

Force per unit charge at a point in an electric field

F/Q

Unit: Newton per coulomb or volt per metre

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