Consider a diagram showing two cells connected in parallel between points B1 and B2. If replaced by a single cell of equivalent emf and internal resistance, which equation correctly represents the equ

Question

Consider a diagram showing two cells connected in parallel between points B1 and B2. If replaced by a single cell of equivalent emf and internal resistance, which equation correctly represents the equivalent emf $ \varepsilon_{eq} $ in terms of $ \varepsilon_1 $, $ \varepsilon_2 $, $ r_1 $, and $ r_2 $?

Accepted Answer

$ \varepsilon_{eq} = \frac{\varepsilon_1 r_2 + \varepsilon_2 r_1}{r_1 + r_2} $

Answer

$ \varepsilon_{eq} = \frac{\varepsilon_1 + \varepsilon_2}{2} $

Answer

$ \varepsilon_{eq} = \varepsilon_1 + \varepsilon_2 $

Answer

$ \varepsilon_{eq} = \varepsilon_1 \varepsilon_2 $

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