One cycle light fails. How could the other light stay on? Distinguish a single loop from separate branches and predict the effect of interrupting one path.
Pupils try “Design independently switched lamps”. Includes the editable PowerPoint, a 50-minute lesson plan and a printable pupil sheet with equipment, instructions, example evidence and worked teacher answers.
KS3 physics for ages 11–14. Part of the electric charge and circuits sequence.
The download also includes 2 independently written practice sheets with teacher answers. The activities are Which lamp stays on? and Comparing two lighting designs.
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