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April 20, 2015

Homework Help: Physics - electricity

Posted by Charles on Tuesday, April 17, 2007 at 10:42am.

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

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