What is the energy consumed by a 75-watt bulb when used for 8 hours?

To find the energy consumed by a 75-watt bulb over a period of 8 hours, you can use the formula for energy consumption, which is Power (in watts) multiplied by Time (in hours).

In this case, the power of the bulb is 75 watts, and it is used for 8 hours. When you perform the calculation:

Energy (in watt-hours) = Power (watts) × Time (hours)

Energy = 75 watts × 8 hours = 600 watt-hours

However, since the question asks for the energy consumed in watt-hours, it can be further stated in kilowatt-hours (kWh) as well, showing that if we were to convert it, we would divide by 1000, leading to 0.6 kWh.

The correct answer reflects the total energy consumption correctly and is a typical calculation used for understanding how much energy a device uses over time, making it crucial for evaluating electricity costs and usage in various applications.