In the figure below, what is the potential difference Vd-Vc between points d and c if E1 = 4.9 V, E2 = 1.8 V, R1 = R2 = 15 Ω, and R3 = 6.7 Ω, and the batteries are ideal?
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In the figure below, what is the potential difference between points and if , and , and the batteries are ideal?