CrackBadger
New Member
I was under the impression that watts were joules expended per second but obviously thats not the case.
So Power = Voltage x Current. Lets say I have a circuit with 10V applied to it and a current of 5 amps. Thats means I have 50 watts. In this sense if I lower the resistance that will increase the current and therefore increase the power.
What about the energy being expended? Lowering the resistance will only decrease the energy being expended so its not actually putting anymore energy into the circuit?
In other words Im asking if Watts is the amount joules passing a certain point per second or is it joules being expended in a resistor per second?
When an electrical appliance says 1000 Watts on it does that mean it requires 1000 joules per second to operate or does it mean it expends 1000 joules per second. (I know in that case it probably means both but Im asking what the tag saying 1000 Watts implies)
Is this correct?
So Power = Voltage x Current. Lets say I have a circuit with 10V applied to it and a current of 5 amps. Thats means I have 50 watts. In this sense if I lower the resistance that will increase the current and therefore increase the power.
What about the energy being expended? Lowering the resistance will only decrease the energy being expended so its not actually putting anymore energy into the circuit?
In other words Im asking if Watts is the amount joules passing a certain point per second or is it joules being expended in a resistor per second?
When an electrical appliance says 1000 Watts on it does that mean it requires 1000 joules per second to operate or does it mean it expends 1000 joules per second. (I know in that case it probably means both but Im asking what the tag saying 1000 Watts implies)
Is this correct?
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