Three resistors connected in series have voltages labeled ΔV1, ΔV2, and ΔV3. Which of the following expresses the total voltage taken over the three resistors together? a ΔVt = ΔV1 + ΔV2 + ΔV3 b ΔVt = ΔV1 = ΔV2 = ΔV3 c ΔVt = (1/ΔV1 + 1/ΔV2 + 1/ΔV3) d ΔVt = (1/ΔV1 + 1/ΔV2 + 1/ΔV3)–1

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