Question

If a current of `8 A` passing through a circuit generates `34 W` of power, what is the resistance of the circuit?

Answer 1

The power is dependant on the voltage and the current.
`p=UxxI` or: Watt=Volt x Ampere

Explanation:

`p=UxxI->U=(p)/(I)`
Fill in what we know:
`U=34/8=4.25V`

For a this voltage to generate this current the resistance follows Ohm's law:
`R=(U)/(I)` or Ohm=Volt/Ampere
Or:
`R=4.25/8=0.53125Omega~~0.53Omega`