When a glass rod rubbed with silk is brought near a charged plastic straw rubbed with polythene there is an attraction between the two. Identify the charge on the plastic straw.

Positive

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Negative

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Neutral

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Can't be predicted

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Solution

The correct option is D. Negative.
The charge acquired by a glass rod when it is rubbed with silk is positive.
Like charges repel and unlike charges attract. The straw gets attracted to the glass rod, which necessarily means that the plastic straw acquired negative charge.

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Similar questions

Q. When a charged glass rod rubbed with silk cloth is brought near a negatively charged plastic straw, there is an attraction between the two. What can be said about the glass rod?

Q. A glass rod and a plastic straw, both are rubbed with a polythene sheet and brought to each other. Attraction is observed. What kind of charge is acquired on the plastic straw?

Q. What happens when charged glass rod is brought near a charged plastic straw after being rubbed with silk?

Choose the correct option:

Statement 1: When a plastic straw is rubbed with a piece of paper and brought near another plastic straw, it attracts the second straw.

Statement 2: A straw is said to have acquired electrostatic charge after it has been rubbed with a piece of paper. Therefore, it exerts an electrostatic force on the second straw and attracts it.

Q. Statement 1: Plastic rod becomes negatively charged when rubbed with a cloth.
Statement 1: Glass rod becomes positively charged when rubbed with a cloth.
Explain both the statements.

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When a glass rod rubbed with silk is brought near a charged plastic straw rubbed with polythene there is an attraction between the two. Identify the charge on the plastic straw.

The correct option is D. Negative.The charge acquired by a glass rod when it is rubbed with silk is positive. Like charges repel and unlike charges attract. The straw gets attracted to the glass rod, which necessarily means that the plastic straw acquired negative charge.

The correct option is D. Negative.
The charge acquired by a glass rod when it is rubbed with silk is positive.
Like charges repel and unlike charges attract. The straw gets attracted to the glass rod, which necessarily means that the plastic straw acquired negative charge.