Using a variety of electrical devices such as a bulb, a buzzer, a motor, a meter and different switches to test a simple low voltage circuit and complete the circuit.
Using two different probes across a tangle of wires to find which terminals are connected. The probes are also used to test which bulbs and fuses are blown.
Using hands placed on two plates to complete a low voltage electrical circuit and compare their conductivity with a range of different materials. Probes are also used to check whether materials are conductors or insulators.
Using and electro-magnet to move across a set of trays containing different materials; an assortment of iron nails, nuts, small compasses and a circuit with a magnetic switch, to test their magnetism.
Turning a small generator to power a number of devices, and switching them on and off, to compare the different levels of power input they need.
Four plates, two each of copper and aluminium are connected to a meter. By placing hands on two different materials a current can be generated, just like a battery.
A long clear tube has coils of wire at intervals inside it, each connected to an L.E.D. When a magnet is dropped down the tube it induces a current, lighting the L.E.D.’s as it passes through the coils.
A pair of Morse Code transmitters are used to tap messages using the code provided. At each tap, a buzzer sounds or a light flashes.
Using a probe to pass a current through a bulb, a buzzer and a motor with different resistances, then observing the effect. The volume of a speaker can be changed by moving a knob along the slide of a variable resistor.
A light bulb representing the sun illuminates a solar panel which powers a small motor to rotate a disc. Altering the position of the panel and placing filters in front of it represents different weather conditions, altering the speed of the disc.
Two domes containing different materials are rubbed with a piece of cloth, which makes the materials dance about due to the static electricity being produced.
Placing different windmills in front of an air flow drives the turbines to produce electricity. Changing their position alters their output which can be read on the meter.