Predict/Explain An electrically neutral object is given a negative charge. (a) In principle, does the object’s mass increase, decrease, or stay the same as a result of being charged? (b) Choose the best explanation from among the following:
I. To give the object a negative charge we must give it more electrons, and this will increase its mass.
II. A positive charge increases an object’s mass; a negative charge decreases its mass.
III. Charge is conserved, and therefore the mass of the object will remain the same.
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