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P4 Electric Circuits (Electrical Charges and Fields (Insulating materials…
P4 Electric Circuits
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Series Circuits
Adding more resistors in series increases the total resistance because the current through the resistors is reduced and the total P.D across them is unchanged
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For cells in series, acting in the same direction, the total potential difference is the sum of their individual potential differences
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Parallel Circuits
The bigger the resistance of a component, the smaller the current that will pass through that component
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Adding more resistors in parallel decreases the total resistance because the total current through the resistors is increased and the P.D. across them is unchanged