A portable lantern has a battery with a 6 V and 1 ohm internal resistance while the light bulb has a resistance of 11 ohms in a simple series circuit….

A portable lantern has a battery with a 6 V and 1 ohm internal resistance while the light bulb has a resistance of 11 ohms in a simple series circuit.  What is potential difference across the terminals of the battery when the light is turned on?