Electricity 3 ESO

Electricity and its applications

Watch these films and answer

•  What does a battery do?
• How can we visualise potential energy?
• What happens if we use several batteries in parallel?
• What happens if we use several batteries in series?

• Look at the initial circuit and tell what is represened as: a) red balls, b)a difference of heigth c)a yellow track.
• How do they define voltage. Who provides it?
• What happens when we open an interruptor? What happens when we close it?
• Hat determines the amount of current through an electric circuit?
• What is the meaning of no current passing through a ligth bulb?
• What is the function of a properly working battery?
• How much is the potential of all points connected by wires or metal switches?
• What is the total current in a parallel circuit? And in a series circuit?
• What does Kirchoff's law refer to?
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