In part h, you discovered that the luminosity of a light bulb increases if the current increases. the rate at which electric potential energy is converted into heat depends on the current flowing through the bulb and the voltage across the bulb. this energy is supplied by the battery. mathematically, the luminosity p of the light bulb is given by p=δvi, where δv is the voltage across the bulb and i is the current. what happens to the luminosity of the light bulb if the voltage of the battery is doubled? (note that the phet simulation does not display a numerical value for the luminosity, so you should use the relationship between the luminosity, the voltage across the bulb, and the current.)