2. A teacher rubs a Perspex rod with a cloth. It becomes charged.

a) What is the net charge on the cloth?

b) What is the net charge on the rod?

c) Would the rod attract or repel a charged polythene rod? Explain your answer.

3. Why can plastic become charged if you rub it, but not metal?

4. A student says that the rods repel because they have poles like magnets. Is she correct? Explain your answer.

Question

27-07-2024
Physics

Answered

2. A teacher rubs a Perspex rod with a cloth. It becomes charged.

a) What is the net charge on the cloth?

b) What is the net charge on the rod?

c) Would the rod attract or repel a charged polythene rod? Explain your answer.

3. Why can plastic become charged if you rub it, but not metal?

4. A student says that the rods repel because they have poles like magnets. Is she correct? Explain your answer.

Answer :

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GinnyAnswer GinnyAnswer · Answer 1 · 2024-07-27T06:14:48-04:00

Final answer:

When rubbing a Perspex rod with cloth, it becomes positively charged. This charge leads to an attraction between the rod and small pieces of paper due to the electrostatic force.

Explanation:

Charging the Perspex rod: Rubbing Perspex rod with cloth transfers electrons, leading to a net positive charge on the rod.

Explanation of charging: Charging occurs due to the transfer of electrons; the Perspex rod gains electrons from the cloth, resulting in a net positive charge on the rod.

Attracting small pieces of paper: The charged rod attracts small pieces of paper due to the electrostatic force between the positive charge on the rod and the negative charge on the paper.

Learn more about electrostatic charge and interactions here:

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