kingpb
Senior Member
- Location
- SE USA as far as you can go
- Occupation
- Engineer, Registered
Simplified math concepts:
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If you decide R is not constant (which would be the case of a light bulb) then the formula does not apply and the values are not considered directly proportional.
The same goes for power, if the load can vary as you change V or I, then it would not be considered inversely proportional.
IMO, as the OP was stated, they are assuming R and P are constants.
View attachment 412
View attachment 413
If you decide R is not constant (which would be the case of a light bulb) then the formula does not apply and the values are not considered directly proportional.
The same goes for power, if the load can vary as you change V or I, then it would not be considered inversely proportional.
IMO, as the OP was stated, they are assuming R and P are constants.