What is an electric field?

An electric field is a region around a charged particle or object, within which a force would be exerted on other charged particles or objects.

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Do particles of the same charge attract or repel?

Particles of the same charge repel.

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Do particles of opposite charge attract or repel?

Particles of opposite charge attract.

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What are electric field lines?

Electric field lines are arrows that show the electric field around an object.

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What would a diagram of the electrical field lines around a positive particle look like?

All the arrows are perpendicular to the surface of the particle.


All arrows point away from the particle.

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If an object has a strong enough charge, what can it do to the surrounding air?

It can ionise the air.


This means it causes the particles in the air to lose electrons so that they become charged. The air is then able to conduct electricity.

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What would a diagram of the electrical field lines around a negative particle look like?

All the arrows are perpendicular to the surface of the particle.


All arrows point towards the particle.

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What would a diagram of the electrical field lines between a positive and negative particle look like?.

Arrows point from positive to negative.

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