A 30 nC charge is moved from a point where V = 110 V to a point where V = -30 V . Part A How much work is done by the force that moves the charge? Express your answer to two significant figures and include the appropriate units.
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Step 1
Given q = 30 nC = 30 x 10^-9 C, V1 = 110 V, and V2 = -30 V. ΔV = V2 - V1 = -30 V - 110 V = -140 V. ΔU = (30 x 10^-9 C)(-140 V) = -4.2 x 10^-6 J. Show more…
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