VIRP tables are the best use to find missing information in either series circuits or parallel circuits. However, there's different rules for each type of circuit. First, in a series circuit, all the currents are the same for the total and each resistor. However, the voltage is the same for all resistors and the total in parallel circuits. Also, in a parallel circuit, to solve for the resistance, the addition of 1/each resistor equals 1/total resistance. Lastly, to find missing information, you can use both R=V/I and P=IV. Overall, when using the VIRP table, you can solve any resistor circuit problem given.