GCSE Physics (Eduqas)

Topic Summaries

Charge, current, and electric fields

Electric fields

  • A charged object will create an electric field around itself.
    • This field is strong close to the object and weakens with distance from the object.
    • Increasing the charge of the object will also increase the strength of the field.
  • A charged object in the field will experience a non-contact force.
    • This will be an attractive force for opposite charges and repulsive for like charges.
    • The strength of the force is dependent on the strength of the field.
  • Electric fields can be shown using field lines.
    • The field lines point in the direction of the force that a positively charged object would experience in the field.
    • The field lines get further apart with distance from the object because the field becomes weaker.

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