Post a New Question

Physics - electricity

posted by .

An incandescent lamp is marked '120v,75W'

a)what is the current in the lamp under normal condition of operation?

b)How much does it cost per hour to operate the lamp if the price of electrical energy is $6.00 per unit?

Please stop posting under different names.


Use ohms law, remembering Power is I*V

Cost= power*time

  • Physics - electricity -

    a. P = E*I = 75W
    120I = 75
    I = 0.625A

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

More Related Questions

Post a New Question