Big Ideas: More info...
Demonstration: a good way to show phase differences in capacitive and inductive circuits.
Demonstration: this experiment shows that, for a capacitor, there is a phase difference between current and voltage.
Demonstration: displaying slow AC using a voltmeter. This is an impressive teacher demonstration if performed using large...
Class practical: displaying slow AC on an oscilloscope.
Class practical: this experiment shows that current and voltage are in phase for an ohmic resistor.
Demonstration: this experiment helps advanced level students to compare qualitatively the power produced by AC and equivalent...
Demonstration: an ohmic resistor is equally ohmic when used with alternating current.
Demonstration: a simple qualitative demonstration of the varying voltage of an alternating supply.
Demonstration: a model showing the principle of the hot-wire ammeter. This is a chance to see models of historic meters...
Demonstration: a model showing the principle of the moving-iron meter.
Class practical: showing students that the e.m.f. (voltage) produced by a dynamo depends on the rate at which it turns.
There are many ways of explaining root mean square (rms) voltage and current at different levels of complexity, to advanced...
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