Why does a balloon stick to the wall after it is rubbed on polythene?
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Static charges develop on surface of the balloon by rubbing it with polythene. An electric force develops and charges of both (balloon and wall) start to attract each other. This causes the balloon to stick to the wall.
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When one object is rubbed against another, static electricity can be created. This is because the rubbing creates a negative charge that is carried by electrons. Similarly, when you rub a balloon on your head it causes opposite static charges to build up both on your hair and the balloon
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