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1. A student gives a plastic strip an overall electric charge - Edexcel - GCSE Physics - Question 1 - 2021 - Paper 1
Question 1
1. A student gives a plastic strip an overall electric charge. (i) Describe one way that the student can give the plastic strip an overall electric charge. (ii) F... show full transcript
Worked Solution & Example Answer:1. A student gives a plastic strip an overall electric charge - Edexcel - GCSE Physics - Question 1 - 2021 - Paper 1
Step 1
Describe one way that the student can give the plastic strip an overall electric charge.
Answer
The student can give the plastic strip an overall electric charge by using friction. This involves rubbing the plastic strip against another material, such as a cloth, which transfers electrons and leaves the plastic strip with a net electric charge.
Step 2
Which diagram shows the way that electric charge is now distributed?
Answer
When the negatively charged plastic strip is brought near the cap of the electroscope, it causes a redistribution of charge. The negative charges in the gold leaf are repelled, causing it to bend away from the metal rod. Therefore, the correct diagram will show the gold leaf bent away due to the influence of the negatively charged strip, with a concentration of negative charges at the upper part of the electroscope and the gold leaf showing a net charge.' The correct answer is likely option A.