- #1
nyxsilverjk
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Homework Statement
When calculating wattage rating, if you have resistors in both a series and in parallel circuits can you still use P = V2/R to solve for the wattage rating over each resistor if you're given the voltage of the battery or do you have to calculate the voltage drop after each resistor in order to find the next resistor watt rating?
Say I'm given a 24 V battery with a series resistor and two resistors that are in parallel with the series. The series resistor is of 6.9 Ω resistance and the parallel circuits have 1.5 Ω and 8.2 Ω resistance. To find the watt rating of the series resistor the equation it would be P = 242/6.9 Ω. However when you get to the parallel resistors, would you have the equation P2 = 242/1.5Ω or would you have to calculate the voltage drop after the first resistor and use it for the parallel resistor equation?