Electric currents | |
Electric potential^{[]} difference, current and resistance. | |
Electric potential^{[]} difference. | |
5.1.1 | Define electric potential^{[]} difference. |
5.1.2 | Determine the change in potential energy^{[]} when a charge moves between two points at different potentials. |
5.1.3 | Define the electronvolt. |
5.1.4 | Solve problems involving electric potential^{[]} difference. |
Electric current and resistance. | |
5.1.5 | Define electric current. |
5.1.6 | Define resistance. |
5.1.7 | Apply the equation for resistance^{[]} in the form R = ρL/A where ρ is the resistivity^{[]} of the material of the resistor. |
5.1.8 | State Ohms law. |
5.1.9 | Compare ohmic and non-ohmic behaviour. |
5.1.10 | Derive and apply expressions for electrical power^{[]} dissipation in resistors. |
5.1.11 | Solve problems involving potential difference, current and resistance. |
Electric circuits. | |
5.2.1 | Define electromotive force (emf). |
5.2.2 | Describe the concept of internal resistance^{[]}. |
5.2.3 | Apply the equations for resistors in series and in parallel. |
5.2.4 | Draw cricuit diagrams. |
5.2.5 | Describe the use of ideal ammeters and ideal voltmeters. |
5.2.6 | Describe a potential divider. |
5.2.7 | Explain the use of sensors in potential divider^{[]} circuits^{[]}. |
5.2.8 | Solve problems involving electric circuits^{[]}. |
Resistance
Ohm's law
Alternating currents
Oscilloscope
Electrical basics - interactive revision
Multiple choice questions on current electricity
Northallerton College web site
Glossary