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In the centre on the atom is the neucleus and this is orbited by negatively charged electrons. The protons in the neucleus are positively charged, while the neutrons (also in the neucleus) are neutral. An electric current occurs when electrons move. Positive and negative electrons attract, while like charges (positive and positive or negative and negative) repel - just like the poles on a magnet. We are all negatively charged so
if you rubbed a balloon against your hair or your jumper all the negatively
charged electrons try to jump of us on to the balloon so we become positively
charged and the balloon becomes negatively charged, so that means it
will stick against the wall. A. F., R. B.,
J. P-O'B |