Three equal resistors $(R)$ are connected to a battery as shown in $($ Figure $1).$

Figure

$1$ of $1$

If the emf of the battery is $8\mathrm{.}0$ V $,$ what is its terminal voltage when the switch is closed if the internal resistance $r$ is $0\mathrm{.}36$ and $R=6\mathrm{.}00?$

Express your answer in volts.

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Part I

What is the terminal voltage when the switch is open?

Express your answer in volts.

$V_{\text{o}\text{p}\text{e}\text{n}}=$

$$

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