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Results tagged with voltage
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user 31396
Voltage, otherwise known as electrical potential difference (denoted ∆V and measured in volts) is the difference in electric potential between two points (adapted from Wikipedia). Voltage can be constant (DC) or varying (AC).
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How does a nine volt battery make a spark?
EMF only occurs with an inductive or capacitive circuit,you dont have this with resistive circuit. the spark is because at last instant of contact the metal vapourises as previously described.If the voltage …
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