Use these values in Ohm's Law. If you know the total current and the voltage across the whole circuit, you can find the total

**resistance**using Ohm's Law: R = V / I. For example, a parallel circuit has a voltage of 9 volts and total current of 3 amps. The total**resistance**R_{T}= 9 volts / 3 amps = 3 Ω.How do you find resistance in a circuit?

Voltage is the same across each component of the parallel

**circuit**. The sum of the currents through each path is equal to the**total**current that flows from the source. You can find**total resistance**in a Parallel**circuit**with the following**formula**: 1/Rt = 1/R1 + 1/R2 + 1/R3 +