Question

A charge of `18 C` passes through a circuit every `4 s`. If the circuit can generate `24 W` of power, what is the circuit's resistance?

Answer 1

`R~=1,185" Ohm"`

Explanation:

`"calculate current using the formula :"I=(Delta Q)/(Delta t)`
`I=18/4=9/2A`
`"use the power formula :"P=I^2*R`
`24=(9/2)^2*R`
`24=81/4*R`
`R=(24*4)/81`
`R~=1,185" Ohm"`