Which of the following statements is not true?

Lightning and sparks from woolen clothing are essentially the same phenomena.

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When you rub a plastic scale on dry hair, it acquires a charge.

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A glass rod when rubbed with silk acquires a negative charge.

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Static charges are called so because they do not move by themselves.

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Solution

The correct option is C
A glass rod when rubbed with silk acquires a negative charge.

A glass rod when rubbed with silk acquires a positive charge as it loses electrons. It attains a comparatively more number of positive charges than negative charges. Hence the glass rod is said to be positively charged.

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Similar questions

What kind of electric charge is acquired:

(a) by a glass rod rubbed with silk cloth?

(b) by a plastic comb rubbed with dry hair?

1.6 \times 10^{- 13} C

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.

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