How much energy does a 75 watt bulb use

For every hour how much would 75 watt bulb cost for the energy. Also how much energy would a 50 watt bulb use and how much would it cost per hour.

Remember the motto:
Power is to energy as speed is to distance.

Power is a RATE. Energy is an entity.

Power is the RATE at which energy is put to use. Energy is the cumulative total of all power, throughout a period of operation of interest.


BY DEFINITION, the wattage rating on a bulb *is* the power that it is expected to consume. That is the rate at which it uses energy. It might be more or less, depending on subtle conditions causing error, but in general the power is equal to the rated value. For light bulbs, it is important to know that the power ratings are only valid when the proper RMS voltage is across the terminals.


I cannot answer you how much energy the bulbs consume, unless you tell me how much time you operate them.

I can indeed tell you th