Parallel Circuits & Voltage D. Crowley, 2008

Parallel Circuits & Voltage Wednesday, November 21, 2018 Parallel Circuits & Voltage To know how adding more bulbs to a parallel circuit affects the voltage

Electricity Crossword Complete the electricity crossword Across: - Cell Circuit Fuse Nerves Metal Switch Series Down: - Current Conductor Parallel Resistance Ammeter Amps

Parallel Circuit Look at the following circuit + - branch 1 branch 2 How will the voltage differ across the components in branch 1 and branch 2?

Parallel Circuits In a parallel circuit, if a lamp or component breaks the components on the other branches keep working Unlike a series circuit, the lamps stay bright if you add more lamps in parallel

Parallel Your task is to investigate how voltage changes when measured across different components in a parallel circuit Set up the following circuit, measuring the voltage across the lamps V1 V2 Voltmeter Voltage (V) V1 V2 V3 V3

Explanation Write an explanation for what you have found about voltage in a parallel circuit… Voltage is a way of measuring how much energy each electron carries Voltage stays the same in a parallel circuit – it’s the same which every branch you measure because each electron still carries the same amount of energy (the same voltage)

Electricity & You How does electricity allow us to move? When you move your brain send electrical signals, called impulses which travel along our nerves Electricity can harm us – electric shocks can burn the skin or even stop nerves working properly Your body has a much higher resistance than a component like a bulb – this is why we don’t get shocked when touching a 12V circuit - however, mains electricity (230V) will shock you!

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