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Two 1.5 V cells have the positive terminal of one joined to the negative of the other. What is the combined emf?
A0 V
B1.5 V
C0.75 V
D3.0 V
Answer & Solution
Correct answer: D. 3.0 V
In series with matching polarity the emfs add: 1.5 + 1.5 = 3.0 V.
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