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Mathematics 8 Online
OpenStudy (anonymous):

how to solve for unknown circuit values (total values, values of resistors, voltage drops across resistors, and power dissipated by each resistor) Example: Total Voltage = 40 V, R1 = 12 Ohms, R2 = 20 Ohms, R3 = 8 Ohms, R4 = 25 Ohms. Total Power = 20 W. Need to find values for R5, Total Resistance, Current (I), Vr1, Vr2, Vr3, Vr4, Vr5, Pr1-Pr5.

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