Energy cannot be created or destroyed - it can only be transferred into different forms
Conservation of energy
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The resistance to the flow of charge within a source. Internal resistance results in energy being dissipated within the source
Internal resistance
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A consequence of the conservation of energy. The sum of the voltages in any closed loop must equal zero
Kirchhoff's second law
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The difference between a source's emf and the terminal voltage. It is equal to the potential difference across the source's internal resistance
Lost volts
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Components are said to be connected in parallel when they are connected across each other (separate loops)
Parallel circuit
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A method of splitting a potential difference, by connecting two resistors in series. The total potential difference is split in the ratio of their resistances
Potential divider
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The potential difference across resistors connected in parallel is identical for each resistor. The current is split between the resistors. The total resistance is equal to the inverse of the sum of the inverses of the resistances of the resistors
Resistors in parallel
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The current through resistors connected in series is identical for each resistor. The potential difference is split in the ration of their resistances. The total resistance is equal to the sum of the resistances of the resistors
Resistors in series
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A circuit that reacts to external conditions. They commonly involve a semiconductor connected in a potential divider arrangement
Sensor circuits
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Components are said to be connected in series when they are connected end to end (in one loop)
Series circuit
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The potential difference across the terminals of a power source. It is equal to the source's emf minus any voltage drop over the source's internal resistance
Terminal PD
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Other cards in this set
Card 2
Front
The resistance to the flow of charge within a source. Internal resistance results in energy being dissipated within the source
Back
Internal resistance
Card 3
Front
A consequence of the conservation of energy. The sum of the voltages in any closed loop must equal zero
Back
Card 4
Front
The difference between a source's emf and the terminal voltage. It is equal to the potential difference across the source's internal resistance
Back
Card 5
Front
Components are said to be connected in parallel when they are connected across each other (separate loops)
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