Electrical Power
The instantaneous electrical power P delivered to a component is given by
where
- P(t) is the instantaneous power, measured in watts (joules per second)
- V(t) is the potential difference (or voltage drop) across the component, measured in volts
- I(t) is the current through it, measured in amperes
If the component is a resistor with time-invariant voltage to current ratio, then:
where
is the resistance, measured in ohms.
Read more about this topic: Power (physics)
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