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3943695
Current and Potential Difference (Physics Unit 2)
Description
A mind map on current and potential difference
No tags specified
physics
current
potential difference
gcse
highers
Mind Map by
Marcus Wells
, updated more than 1 year ago
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Created by
Marcus Wells
about 9 years ago
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Resource summary
Current and Potential Difference (Physics Unit 2)
Current
The flow of electric charge round the circuit
Charge is measured in coulombs
Measured in amps (A)
Current = Charge / Time
I = Q / T
Potential difference
Same as voltage
Measured in volts (V)
The force that pushes the current round
P.D = Work done / Charge
V = W / Q
Resistance
Anything in the circuit which slows the flow down.
Measured in ohms
The greater the resistance across a component, the smaller the current that flows
(For a given potential difference across the component)
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