In the diagram shown above, if the two cells with emfs $\varepsilon_1$ and $\varepsilon_2$ are connected in series, what is the total emf of the combination?

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Accepted Answer

$\varepsilon_1 + \varepsilon_2$

Answer

$\varepsilon_1 - \varepsilon_2$

Answer

$\varepsilon_1 \times \varepsilon_2$

Answer

$\varepsilon_1 / \varepsilon_2$

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