Use the diagram below for questions #28 and 29. 28. in the diagram above, which symbol represents the light bulb? 29. in the diagram above, which symbol represents the battery?

Symbol A . . . . . a battery

Symbol B . . . . . a light bulb

Symbol C . . . . . a switch that turns the light bulb on and off.  The switch is 'open' in the diagram, so no current is flowing anywhere in the circuit, and the light bulb is not glowing.

increases it