You can revise mains electricity by clicking the links below. Click the links below to try our GCSE physics exam-style or quick-fire quizzes and test your skills and knowledge.

But there are a hardy few who already live their lives "off-grid", getting by just fine without mains electricity or mains water. Among them is 83-year-old Margaret Gallagher, who still lives in ...

There are a number of precautions you can take when working with mains power. We’ve all used the simple in-line power strip so you can quickly switch off the current, but [Yann] has included a ...