GCSE Physics (AQA)

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Electric Fields

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Electricity Static electricity

Electric Fields

1:51 Static Electricity and Electric Fields
Spec 4.2.5.2
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  • Objects inside a field experience a non-contact force.
  • Earth is within a gravitational field, pulling objects towards the center by a non-contact gravitational force.
  • In a magnetic field, objects are pulled towards the poles by a non-contact magnetic force.
  • Electrostatic forces are non-contact forces caused by electric fields around charged objects.
  • All objects have an electric field, determining interactions with other charged particles.
  • Charged objects inside the field experience an electrostatic force.
  • A negative charge in the electric field of a positive charge will attract the positive charge and feel an electrostatic force.
  • Electrostatic forces can be attractive or repulsive.
  • The direction of the field is the direction of the force experienced by a positive charge.
  • A large positive charge repels other positive charges, with the field direction pointing away.
  • Fields are shown with lines and arrows indicating force direction.
  • A small positive charge is attracted towards a negative charge, with field lines pointing towards the negative charge.
  • Strong electric fields can cause sparks when charges are quickly forced through air or insulators.

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