Electric circuits form the basis for countless devices, from simple light switches used to turn on indoor lights to kitchen appliances to robots and computers. Electrical phenomena and technologies can be vividly illustrated, experienced, and understood using low electrical voltages, for instance from a battery.
• How does a torch work?
• How do I turn an electric motor on and off?
• How can I change the rotational direction of a motor?
• How can I control a light from multiple points, for instance a stairwell light?
• How do simple electrical controllers work?