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Physics 8 Online
jabez177 (jabez177):

Which describes what happens when a balloon is rubbed with a wool cloth? A. Electrons are shared equally between the atoms of the balloon and the atoms of the cloth, making both electrically neutral. B. Everyday objects do not have electric charges, so neither the balloon nor the cloth can gain or lose electrons. C. Electrons move from the atoms in the balloon to the atoms in the cloth, causing the cloth to have a negative charge. D. Electrons move from the atoms in the cloth to the atoms in the balloon, causing the balloon to have a negative charge.

imqwerty (imqwerty):

any ideas?

jabez177 (jabez177):

A.

imqwerty (imqwerty):

when you rub the balloon and the cloth then due to kinetic energy the electrons from one substance get excited and jump into the other substance so the substance which donates electrons becomes positively charged and the substance gaining electrons becomes negatively charged in this case the wool cloth can lose electrons easily as compared to balloon so wool cloth loses electrons and balloon gains electrons

jabez177 (jabez177):

So C

imqwerty (imqwerty):

nope here the cloth loses electrons so electrons go from cloth to balloon

jabez177 (jabez177):

D

imqwerty (imqwerty):

yea correct

jabez177 (jabez177):

thanks :)

imqwerty (imqwerty):

np (:

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