Substances that contain ions that when dissolved in a solution, act as charge carriers and allow current to flow
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Card 7
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The opposite direction to conventional current flow. Electrons flow from negative to positive
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Card 8
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The smallest possible charge, equal to the charge of an electron
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Card 9
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A material that has no free charge carriers and so doesn't allow the flow of electrical charge
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Card 10
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A consequence of the conservation of charge. The total current entering a junction must equal the total current leaving it
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Card 11
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The average velocity of an electron passing through an object. It is proportional to the current, and inversely proportional to the number of charge carriers and the cross-sectional area of the object
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Card 12
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The idea that charge can only exist in discrete packets of multiples of the elementary charge
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Card 13
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A material that has the ability to change its number of charge carriers, and so its ability to conduct electricity. Light dependant resistors and thermistors are both examples
