Most substances release electricity when rubbed again stone another. This is most noticeable when the rubbed substance is a very good conducting material

True

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False

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Ambiguous

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Data insufficient

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Solution

The correct option is A False
Answer is B.

Different materials have different amounts of attraction for electrons. When two objects rub against each other it is likely that one will steal electrons from the other. Objects may become charged in many ways, including by contact with or being rubbed by other objects.
Hence, it is not necessary that the two objects should be very good conductors. Therefore, the statement is false.

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True or false?

(a) When two substances are rubbed on each other, like charges are developed on each.

(b) An atom may have either a positive or a negative charge.

(d) If the leaves of the electroscope spread only a little, the charge on them is greater.

If an object made of substance A is rubbed with an object made of substance B, then A becomes positively charged and B becomes negatively charged. If, however, an object made of substance A is rubbed against an object made of substance C, then A become negatively charged. What will happen if an object made of substance B is rubbed against an object made of substance C?

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