Uses and Dangers of Static Electricity

Select the uses of static electricity.

• laser printers

• plug sockets

• removing smoke from chimneys

• insecticide sprayers

Electrostatic paint sprayer form an even spray of paint droplets. This is because...

• the droplets have opposite charges, so stick to each other

• the droplets are attracted to the object

• the droplets all have the same charge, so repel each other equally

• the droplets have equal charges, so all stick to the object

In a lase printer, the toner (ink) is given a positive charge. What charge should be given to the paper?

When electrons jumped from one object to another it can create a _____.

When flying, aeroplanes build up a static charge due to ________ between the plane and the air particles.

Earth wires are made from metals. This is because they are good electrical insulators.

• True

• False

An earth wire is attached to a positively charged vehicle. Which way will the charge flow through the wire?

• Up, towards the vehicle

• Down, towards the Earth

Explain how static charges are built up when refuelling vehicles.

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