Electric field strength
What Electric field strength means in Physics A-Level, as defined for AQA, OCR.
Definitions of Electric field strength
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Reference: AQA
The force per unit positive charge at a point in a field, E = F/Q, measured in N C⁻¹ or equivalently V m⁻¹.
The force per unit positive charge placed at that point, a vector with units N C⁻¹.
The force F per unit positive charge q placed at that point, giving E = F/q.
The force per unit charge, E = F/q, on a small positive test charge.
Topics that use Electric field strength
- Electric field strength (A-level only) (AQA A-Level)
- Fields (A-level only) (AQA A-Level)
- Coulomb’s law (OCR A-Level)
- Point and spherical charges (OCR A-Level)
Related terms
- Electric field
- Field
- Direction and magnitude
- Direction and strength from field lines
- Direction of gravitational, electric and magnetic fields
- Electrostatic force between point charges
- Equipotential surfaces
- Field representation
Using Electric field strength in the exam
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