electricity 188

posted by .

hi my name is christina and i have an electrical question i need help with.
i am taking power engineering electrical 188.
the question is:
how much will ity cost to use 6 lamps of 100 W each if they burn for 5 hours each evening in a month (30 days). the cost of electricity is 0.04 cents per kwh?
how do u solve this question? the answer is $3.60

  • electricity 188 -

    (6 lamps) * (100W/lamp) * (5 hours/day) * (30 days)

    You will end up with a number of watt hours. Convert watt hours to kilo watt hours. Multiply that number by $0.04

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Physics - electricity

    An incandescent lamp is marked '120v,75W' a)what is the current in the lamp under normal condition of operation?
  2. Physics

    A 120-V motor has mechanical power output of 2.00 hp. It is 82.0% efficient in converting power that it takes in by electrical transmission into mechanical power. (a) Find the current in the motor (b) Find the energy delivered to the …
  3. electrical

    The minimum size of a electrical cable recomended for use in power circuit is.
  4. science

    A microwave oven has a power requirement of 1235 W. A frozen dinner requires 6.0 min to heat on full power. (a) How much electrical energy (in kWh) is used?
  5. phyical science

    A microwave oven has a power requirement of 1235 W. A frozen dinner requires 6.0 min to heat on full power. (a) How much electrical energy (in kWh) is used?
  6. Physics

    Assuming 100% of your energy can be converted to electrical power, and electricity costs $0.10 for 1 kilowatt-hour, how high should you climb to make one penny's worth of electricity?
  7. science

    A microwave oven has a power requirement of 1248 W. A frozen dinner requires 6.9 min to heat on full power. (a) How much electrical energy (in kWh) is used?
  8. Someone please help me with science?

    1. Which of the following shows the correct sequence of energy transformations when listening to the radio?
  9. Engineering

    Here we consider instead dissolving guns (which we will assume are pure iron) with sulfuric acid. Fe+H2SO4->FeSO4+H2 It is apparent that they must use an outside source of electrical power to drive the dissolution of the iron. They …
  10. statistics

    Average entry level salaries for college graduates with mechanical engineering degrees and electrical engineering degrees are believed to be approximately the same. A recruiting office thinks that the average mechanical engineering …

More Similar Questions