# Switch Open,Switch Closed

A battery has an EMF (Electromotive Force ) of $$\displaystyle 6\text{ V}$$ and an internal resistance of $$\displaystyle 0.4 \ Ω$$. It is connected to a $$\displaystyle 2.6\ Ω$$ resistor through a SPST (single pole, single throw) switch.

Find the potential difference between the terminals of the battery when the switch is open and when the switch is closed, in volts.

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