A charge of #35 C# passes through a circuit every #5 s#. If the circuit can generate #42 W# of power, what is the circuit's resistance?
The unit of current, the Ampere, is defined as 1 Coulomb of charge per second, therefore, the current,
One of the ways to compute power consumed by a circuit is, using the equation:
where I is the current and R is the resistance.
I will assume that you mean that the circuit consumes 42 Watts:
Solve for R: