Photo AI
1. A student rubs a plastic rod with a dry cloth - Edexcel - GCSE Physics - Question 1 - 2018 - Paper 1
Question 1
1. A student rubs a plastic rod with a dry cloth. The cloth becomes positively charged. (i) Complete the sentence by putting a cross (X) in the box next to your ans... show full transcript
Worked Solution & Example Answer:1. A student rubs a plastic rod with a dry cloth - Edexcel - GCSE Physics - Question 1 - 2018 - Paper 1
Step 1
Complete the sentence by putting a cross (X) in the box next to your answer.
Answer
The cloth becomes positively charged because A negative charge has moved from the cloth to the rod. This is due to the transfer of electrons, where the dry cloth takes electrons from the rod, leaving the rod positively charged.
Step 2
Explain why the strips behave in this way after the student rubs them with the cloth.
Answer
After rubbing, the two strips repel each other because they acquire the same type of charge. The process of rubbing transfers electrons, leading both strips to have a negative charge. As like charges repel, the strips move away from each other.