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Voltage is the unit of measurement for electronic potential, from one point location to another.

3 votes
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Proving an AC current with peak amplitude of 311V is equivalent to a DC current of 220V

We need to start out by defining how a AC and DC voltage can be "equivalent". An AC and DC voltage are considered equal if they cause the same heating in a simple resistive load. … In other words, take the RMS of the voltage. …
Simon B's user avatar
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1 vote
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Efficiency of an electric motor?

The "work" is the useful rotational pull you get from the motor, and excludes any wasted heat. If only 75% of the energy going in comes out as work, then you need to put in 90/0.75J of energy to get …
Simon B's user avatar
  • 538