The amount of charge that passes in 1 second when the current is 1 Amp
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Define Potential Difference
Energy transfer per unit charge from electrical to other forms
2 of 20
Define Electromotive Force
Energy transfer per unit charge from chemical (or other) to electrical
3 of 20
Define Volt
1 volt is one Joule per Coulomb
4 of 20
Define Resistance
Resistance = Potential difference / current
5 of 20
Define Ohm
transmitting a current of one ampere when subjected to a potential difference of one volt
6 of 20
Define Resistivity
resistivity = RA/l where R is resistance, A is the cross sectional area and l is the length
7 of 20
Define Kilowatt-hour
Either energy used by a device drawing 1kw of power for 1 hour. Or 3.6MJ
8 of 20
Define Displacement (for waves)
How far a point on the wave has moved from its undisturbed position
9 of 20
Define Amplitude
Maximum displacement
10 of 20
Define Wavelegnth
distance between neighbouring identical points
11 of 20
Define period
Time take for one complete oscillation
12 of 20
Define phase difference
The fraction of a cycle between the oscillations of two particles. Or relates the oscillation of two points on the same wave, describing how of step one oscillation is from the other
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Define frequency
Number of waves passing through a point per unit time
14 of 20
Define node
Points in a stationary wave where there is zero displacement of a particle at any time
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Define anti-nodes
Points on a stationary wave where displacement of the particles is at a maximum
16 of 20
Define Electron-Volt
The kinetic energy gained by an electron when it is accelerated by a potential difference of 1V
17 of 20
Define Work Function
The minimum amount of energy required to release an electrons from the surface of a material
18 of 20
Define Threshold frequency
The lowest possible frequency of a photo that will cause an electron to be emitted from the material
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Define Intensity
The energy per unit area per second
20 of 20
Other cards in this set
Card 2
Front
Energy transfer per unit charge from electrical to other forms
Back
Define Potential Difference
Card 3
Front
Energy transfer per unit charge from chemical (or other) to electrical
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