How much power does bulb A dissipate when the switch is open? How much power does bulb A dissipate when the switch is closed?

If the battery in (Figure 1) were ideal, lightbulb A would not dim when the switch is closed. However, real batteries have a small internal resistance, which we can model as the 0.3 12 resistor shown inside the battery. In this case, the brightness of bulb A changes when the switch is closed. Figure 1 of 1 0.5 0 6.0 0 6.0 0 3.0 V