Photo AI
Vicky combs her hair with a plastic hair comb - Edexcel - GCSE Physics - Question 6 - 2012 - Paper 1
Question 6
Vicky combs her hair with a plastic hair comb. The comb now has a negative charge. (i) Complete the sentence by putting a cross (X) in the box next to your answer. ... show full transcript
Worked Solution & Example Answer:Vicky combs her hair with a plastic hair comb - Edexcel - GCSE Physics - Question 6 - 2012 - Paper 1
Step 1
Step 2
Explain how Vicky's hair has also become charged.
Answer
Vicky's hair has become charged as a result of losing electrons to the comb during the combing process. This transfer of electrons happens due to friction between the hair and the comb. Consequently, her hair, now lacking electrons, acquires a positive charge.
Step 3
Show on the diagram where the foil is negatively charged.
Answer
The foil becomes negatively charged because it is attracted to the negatively charged comb, resulting in the foil electrons repelling each other. Therefore, an arrow should be drawn towards the bottom of the foil to indicate that the foil is negatively charged.
Step 4
Step 5
Explain the benefits of using this sprayer compared with one that does not charge the paint.
Answer
Using an electrostatic paint sprayer has several benefits. Firstly, the negatively charged paint particles are attracted to the positively charged metal object, ensuring better coverage and less overspray. This leads to a more efficient paint application and minimizes waste. Additionally, the charged paint particles can reach into crevices more effectively than uncharged paint, providing a more uniform coating.