Potential difference (voltage) and resistance: Electricity: Physics: GCSE (9:1)

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16 Terms

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Potential difference (voltage)

A measure of the amount of energy given to the charge carriers (electrons) in a circuit

<p>A measure of the amount of energy given to the charge carriers (electrons) in a circuit</p>
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E = QV

The equation linking energy transferred, charge flow and potential difference

<p>The equation linking energy transferred, charge flow and potential difference</p>
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E

The symbol for energy transferred

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Q

The symbol for charge flow

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V

The symbol for potential difference

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Joules (J)

The SI unit for energy and work

<p>The SI unit for energy and work</p>
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Coulombs (C)

The SI unit for charge flow

<p>The SI unit for charge flow</p>
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Volts (V)

The SI unit for potential difference

<p>The SI unit for potential difference</p>
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1 volt is equal to

The potential difference when one coulomb of charge transfers one joule of energy (1 V = 1 J/C)

<p>The potential difference when one coulomb of charge transfers one joule of energy (1 V = 1 J/C)</p>
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V = IR

The equation linking potential difference, current and resistance; also known as Ohm's Law

<p>The equation linking potential difference, current and resistance; also known as Ohm's Law</p>
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Current

The rate of flow of electric charge (electrons) around a circuit

<p>The rate of flow of electric charge (electrons) around a circuit</p>
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Resistance

The opposition to the movement of electric current through a material

<p>The opposition to the movement of electric current through a material</p>
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I

The symbol for current

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R

The symbol for resistance

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Amps/amperes (A)

The SI unit for current

<p>The SI unit for current</p>
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Ohms (Ω)

The SI unit for resistance

<p>The SI unit for resistance</p>