Electricity

In terms of electrons, explain why a polythene rod becomes negatively charged when rubbed with a dry cloth
Both the cloth and the rod have electrons (negatively charged) when the rod is rubbed on the cloth the electrons are transferred from the cloth to the surface of the rod, therefore the atoms of the rod become negatively charged (gained electrons)
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In terms of electrons explain why a perpex rod becomes positively charged when rubbed with a dry cloth
Rubbing a perpex rod with a cloth transfers electrons from the surface of the rod on to the cloth therefore the rod becomes positively charged as it has lost electrons
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What is electric current?
The flow of charge
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What does a ammeter measure?
The current
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What does a voltmeter measure?
The potential difference
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Card 2

Front

In terms of electrons explain why a perpex rod becomes positively charged when rubbed with a dry cloth

Back

Rubbing a perpex rod with a cloth transfers electrons from the surface of the rod on to the cloth therefore the rod becomes positively charged as it has lost electrons

Card 3

Front

What is electric current?

Back

Preview of the front of card 3

Card 4

Front

What does a ammeter measure?

Back

Preview of the front of card 4

Card 5

Front

What does a voltmeter measure?

Back

Preview of the front of card 5

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