Physics

Problem

12\,\text{V}

battery has an internal resistance of

1\,\Omega

. It is connected to a

5\,\Omega

external resistor. A switch connects a second

5\,\Omega

resistor in parallel with the first. Which of the following is closest to the terminal voltage of the battery immediately after the switch is closed? a)

10\,\text{V}

6.0\,\text{V}

8.6\,\text{V}

12\,\text{V}

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