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14 Cards in this Set
- Front
- Back
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An electric charge |
The electrical state of an object, which can be positively charged or negatively charged.circuit
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A circuit |
A closed loop through which current flows - from a power source, through a series of components, and back into the power source.
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An electron
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Sub-atomic particle, with a negative charge and a negligible mass relative to protons and neutrons.
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A conductor
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An electrical conductor is a material which allows an electrical current to pass through it easily. It has a low resistance. A thermal conductor allows thermal energy to be transferred through it easily.
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An electric component
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A device in an electric circuit, such as a battery, switch or lamp.
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A current
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Moving electric charges, for example, electrons moving through a metal wire
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Potential difference
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= voltage, electromotive force
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In parrallel |
In a parallel circuit, the current divides into two or more paths before recombining to complete the circuit. Lamps and other components in these different paths are said to be in parallel.
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In series
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Connected to a circuit in such a way that the same current flows through each component in turn. Opposite of in parallel.
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Resistance
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The opposition in an electrical component to the flow of electricity through it. Resistance is measured in ohms.
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An ion
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Electrically charged particle, formed when an atom or molecule gains or loses electrons.
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Proportional
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When two quantities have the same ratio or relative size. For example, current is proportional to voltage if the current doubles when the voltage is doubled.
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Inversely proportional
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A relationship between two variables where as one variable increases, the other variable decreases. Eg as the volume doubled, the pressure decreased by half.
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An electrical component
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A device in an electric circuit, such as a battery, switch or lamp.
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