Final answer:
While both the space heater and light bulb use the same amount of electrical power, the space heater is likely to deliver more heat per second as it is designed specifically for heating, unlike the incandescent bulb which also produces light.
Step-by-step explanation:
Both the 100 W space heater and the 100 W incandescent light bulb consume the same amount of electrical power, but their heat delivery may differ slightly based on how they release energy into their surroundings. A 100 W space heater is specifically designed to convert electrical energy into heat with maximum efficiency, meaning almost all the 100 W is used for heating the room. On the other hand, a 100 W incandescent light bulb converts a significant portion of its energy into light, with the rest as heat, which is an incidental by-product. Although both devices consume the same power, the space heater will generally deliver more heat per second into the room because it is optimized for heating, not lighting.