AQA · Physics · 8463
GCSE Physics: Static charge
Electricity · AQA GCSE Physics (8463), specification point 4.2.5.1. Cards are generated from the exam board's own specification for "Static charge", and every card links back to the page it came from. Separate science only. Specification © AQA — used with attribution.
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What happens when certain insulating materials are rubbed against each other?
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They become electrically charged, because electrons are rubbed off one material and onto the other.
Which charged particles are transferred when two insulators are rubbed together?
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Electrons (negatively charged).
When insulators are rubbed together, the material that gains electrons becomes ? charged.
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negatively
What charge is left on a material that loses electrons when rubbed?
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A positive charge, equal in size to the negative charge gained by the other material.
Why are the charges on two rubbed insulators equal and opposite?
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Every electron lost by one material is gained by the other, so the positive and negative charges are equal in size.
What force acts between two objects carrying the same type of charge?
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Repulsion — like charges repel.
What force acts between two objects carrying different types of charge?
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Attraction — unlike charges attract.
Attraction and repulsion between charged objects are examples of a ? force.
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non-contact
Why is the electrostatic force between charged objects classed as a non-contact force?
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The objects exert a force on each other when brought close together, without needing to touch.
Which type of material becomes charged when rubbed: insulators or conductors?
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Insulators — the transferred charge cannot flow away, so it stays on the surface.
What evidence shows that charged objects exert forces on each other without contact?
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Charged objects brought close together visibly attract or repel (e.g. a charged rod deflecting a suspended charged rod) before touching.
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