Define power and explain how to determine power. (4 points)

The power is a measure of the rate at which work is done. (or similarly, at which energy is transferred). The standard unit of power is Watt (1W). The power is determined by the change in energy, delta E (number of joules) and delta t, which is the time taken in seconds then: P= delta E/ delta t

Explanation:

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current and voltage can both be different in different parts of a circuit so it matters where you place the ammeter and voltmete

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sodium is solid at rt