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What is the significance of obtaining a negative reading in testing voltage?
Wiki User
∙ 10y ago
Electric current can flow in one of two directions in a wire; with alternating current, the direction changes continually, back and forth. The use of positive and negative values for voltage gives you a direction for the voltage. If current flowing to the right is positive, then current flowing to the left is negative.
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Answer #2:
A negative reading indicates that the point to which the positive probe of
the voltmeter is connected is at a lower potential than the point to which
the negative meter probe is connected. It tells nothing about the circuit
conditions except in combination with the knowledge of how the meter
is connected.
Wiki User
∙ 10y ago
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