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Solution: In the figure, consider the circuit sketched. The battery ha...

Question

In the figure, consider the circuit sketched. The battery has emf ε = 80 volts and negligible internal resistance. The four resistors have resistances of R1 = 14 Ω, R2 = 21 Ω, R3 = 21 Ω, and R4 = 14 Ω. Find the voltage drop across R4