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Current & Circuits
Question | Answer |
---|---|
Give an equation for heat lost | W=(I^2)*R*t |
Give an equation for power | P=(I^2)*R |
What's the advantage of transferring electricity at high voltage? | Less energy is lost as heat |
What is the high voltage used called? | Extra high tension |
What transfers high voltage to low voltage and visa versa? | A transformer |
What is an ion? | An atom or molecule that has gained or lost an electron |
What are the charge carriers in an electrolyte? | Positive and negative ions |
What colour is the live wire? | Brown |
What colour is the neutral wire? | Blue |
What colour is the earthing wire? | Green & Yellow |
What is the kilowatt hour | Energy used by a 1000W appliance inn 1 hour |