If the battery in Figure P23.60 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 Ω resistor shown inside the battery. In this case, the brightness of bulb A changes when the switch is closed.

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

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

Transcribed Image Text:

0.3 A6.0 2 6.02 16.00 2.5 V FIGURE P23.60