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why use positive charge in the definition of volt

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asked Feb 8, 2017 in Physics by Tahsan Takib Riki (102 points)
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answered Feb 19, 2017 by tintin (321 points)
'cause similer charges repel and it gives positive voltage which means we need to work for that situation. so if we let both the point charge and test charge are negative it will also result positive voltage. so we can neglect negative value for the sake of simplicity. (it would not be a great crime if we use both the negative charges!! but "for the sake of simplicity" we don't)

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