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5.1.1 define electric potential difference
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-electric potential difference: work done per unit charge to move a positive test charge between A and B- joule / coulomb = volt
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5.1.2 Determine the change in potential energy when a charge moves between two points at different potentials.
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-The change in the electrical potential energy = the work done-Moving from point A (low EP) to point B (hight EP) makes charge q gain electrical potential energy -Potential energy = F * d = E * q * d
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5.1.3 Define the electronvolt
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- the energy acquired by an electron as it moves through a potential difference of 1 volt. - 1 eV = 1.6 * 10-19J
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5.1.5 Define electric current
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 - The flow of charge particles through a material when a potential difference is applied across it.-Rate of flow of charge -Unit : Ampere (A)-conventional <-> electron flow |
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5.1.6 Define resistance
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 - a measure of how difficult a charge can flow in a material - Unit: Ohms |
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5.1.8 State Ohm's Law
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- provided that the physical conditions such as temperature are kept constant, the resistance is constant over a wide range of applied potential difference and therefore the potential difference and therefore the potential difference is directly proportional to the current -potential difference (a) current.- Voltage = current *Resistance
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5.1.9 Compare Ohmic and non-ohmic behavior
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 - in ohmic behavior, V and I are not proportional to each other. - in non-ohmic behavior, V and I are not proportional to each other. |
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5.1.10 Derive and apply expressions for electrical power dissipation in resistors.
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-electrical power is the rate that an electrical device uses energy. P = Et = I2R - V2R
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5.2.1 Define electromotif force (emf).
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The amount of energy per unit charge supplied to a circuit by a power source.
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5.2.2 Describe the concept of internal resistance
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 When a battery supplies a current to an external circuit it gets warm. This is due to the battery having a small internal resistance. |
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5.2.4 Draw circuit diagrams
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 SEE IMAGE |
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5.2.5 Describe the use of ideal ammeters and ideal voltmeters
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Ammeter: - measure current- in series- minimum resistance- ideal ammeter
Voltmeter:- measure voltage- in parallel- maximum resistance- ideal voltmeter |
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5.2.6 Describe a potential divider
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 SEE IMAGE |
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5.2.7 Explain the use of sensors in potential divider circuits
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 SEE IMAGE |
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6.1.1 State Newton's universal law of gravitation
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Every material particle in the Universe attracts every other material particle with a force that is directly proportional to the product of the masses of the particles and that is inversely proportional to the square of the distance between them
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