When a glass rod is rubbed with a silk cloth, charges appear on both. A similar phenomenon is observed with many other pairs ofbodies. Explain how this observation is consistent with the law ofconservation of charge.

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Solution

When two bodies are rubbed against each other, equal and opposite charges develop on both the bodies.

When a glass rod is rubbed with a silk cloth, equal and opposite charge is produced, but the net charge is zero which is consistent with the law of conservation of charge.

When many other pairs of objects are rubbed with each other, still the net charge of all the pairs of objects is zero. Thus, it justifies the law of conservation of charge.

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When a glass rod is rubbed with a silk cloth, charges appear on both. A similar phenomenon is observed with many other pairs of bodies. Explain how this observation is consistent with the law of conservation of charge.

Q. A glass rod when rubbed with silk cloth acquires a charge

1.6 \times 10^{- 13} C

. What is the charge on the silk cloth?

Q. Glass rod when rubbed with a silk cloth acquires ___ charge and the silk cloth acquires ___ charge.

When a glass rod is rubbed with a piece of silk cloth, then :

(a) the glass rod and silk cloth both acquire the positive charge.

(b) the glass rod becomes positively charged while the silk cloth has a negative charge.

(d) the glass rod becomes negatively charged while the silk cloth has a positive charge.

Q. Asssertion: Two glass rods become charged when rubbed with a silk cloth.
Conclusion: Both the glasses acquire unlike charges.

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