1. There are at least three things wrong with this plug. Can you identify them?
2. What do you think has happened in the picture above?
3. Look at the picture:
What is the multimeter measuring? Why should a Year 11 pupil NOT do this?
4. What does this symbol mean? (The outer box is a frame for the picture.) What is the advantage of this in an appliance?
5. Look at the screen from the CRO:
The timebase is set to 10 ms/cm. What is the frequency of the AC wave form?