If a current of #5 A# passing through a circuit generates #450 W# of power, what is the resistance of the circuit?
1 Answer
Electrical power is given by
Explanation:
Different people learn differently. Some memorize all the possible formulae. That works, but my approach is to memorize as few as possible and understand them well enough to combine them.
Summarising the data:
I remember Ohm's Law:
Now I just need to rearrange to make
Then substitute in the data: