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17 Cards in this Set
- Front
- Back
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PRINCIPLE OF CONSERVATION OF CHARGE |
Charge cannot be created or destroyed, it can only be separated through electrification |
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COULOMB'S LAW |
The force between 2 charges is directly proportional to the product of the charges and inversely proportional to the distance between the charges squared |
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ELECTRIC FIELD |
- A region of space in which an electric charge experiences a force -The direction of the electric field at a point is the direction that a + test charge would move if placed at that point |
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ELECTRIC FIELD STRENGTH/ MAGNITUDE |
The force per unit positive test charge Vector, give direction or: E= F/Q |
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POTENTIAL DIFFERENCE |
The work done per unit + charge V=W/q E= ES |
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CURRENT |
The rate of flow of charge I= q/t |
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OHM'S LAW |
The current through a conductor is directly proportional to the potential difference across the conductor at a constant temperature |
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RESISTANCE |
A material's opposition to the flow of electric current (I) Unit: ohm |
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EMF |
Total energy supplied per coulomb of charge by the cell |
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MAGNETIC FLUX DENSITY (B) |
A representation of the magnitude and direction of the magnetic field EMF induces in a loop when: - change in mag field - change in area of loop - change in L between field and loop |
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MAGNETIC FLUX LINKAGE |
The product of the number of turns on the coil and the flux through the coil |
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FARADAY'S LAW |
An emf induced is dp to the rate of change of magnetic flux (flux linkage) |
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LENZ'S LAW |
The induced current flows in a direction so as to set up a magnetic field to oppose the change in magnetic flux |
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DIODE |
A component that only allows current to flow in one direction |
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PHOTOELECTRIC EFFECT |
Process that occurs when: light shines on a metal and electrons are dejected SIGNIFICANCE: - establishes quantum theory - illustrates the particle nature of light |
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THRESHOLD FREQUENCY (Fo) (cut-off frequency) |
The min f of incident radiation at which electrons will be emitted from a particular metal |
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WORK FUNCTION (Wo) |
The min amount of energy needed to emit an electron from the surface of a metal material specific |
