Take a used ballpen refill and rub it vigorously with a piece of polythene. What happens when we bring the refill close to small pieces of paper. Give a reason for this.
[2 MARKS]

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Solution

Each point: 1 Mark

1. When a plastic refill is rubbed with polythene, it acquires a small electric charge.
2. The charge on the refill exerts electrostatic force on the small pieces of papers and attracts them.

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Take a used ballpen refill and rub it vigorously with a piece of polythene. What happens when we bring the refill close to small pieces of paper. Give a reason for this. [2 MARKS]

Each point: 1 Mark 1. When a plastic refill is rubbed with polythene, it acquires a small electric charge. 2. The charge on the refill exerts electrostatic force on the small pieces of papers and attracts them.

Take a used ballpen refill and rub it vigorously with a piece of polythene. What happens when we bring the refill close to small pieces of paper. Give a reason for this.
[2 MARKS]

Each point: 1 Mark

1. When a plastic refill is rubbed with polythene, it acquires a small electric charge.
2. The charge on the refill exerts electrostatic force on the small pieces of papers and attracts them.