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Four resistors are connected to a battery as shown in the figure. The current in the...

Four resistors are connected to a battery as shown in the figure. The current in the battery is I, the battery emf is ? = 6.20 V, and the resistor values are R1 = R, R2 = 2R, R3 = 4R, R4 = 3R. Find the voltages across each resistor. R 1, R2 and R3 are in series. R4 is in parallel.

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