To find out how much electrical energy a 5-W light bulb converts in one hour, you can multiply the power (5 W) by the time in seconds (3600 s). The light bulb would convert 18,000 joules of electrical energy into radiant and thermal energy in one hour.
To calculate the electrical energy converted by a 5-W light bulb in one hour, we can use the relationship between power, energy, and time. The equation for energy in electrical systems is E = P × t, where E is the energy in joules, P is the power in watts, and t is the time in seconds.
For a 5-W light bulb operating for one hour (which is 3600 seconds), the energy conversion can be calculated as follows:
Power (P) = 5 W (watts)
Time (t) = 1 hour = 3600 seconds
Therefore, the energy (E) used by the light bulb is:
E = P × t = 5 W × 3600 s = 18000 J (joules)
This amount of energy is what the light bulb converts to radiant and thermal energy during that one hour.