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The current in a 120-V reading lamp is 2.6 A. If the cost

Chapter 21, Problem 30P

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QUESTION:

Problem 30P

The current in a 120-V reading lamp is 2.6 A. If the cost of electrical energy is $0.075 per kilowatt-hour, how much does it cost to operate the light for

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QUESTION:

Problem 30P

The current in a 120-V reading lamp is 2.6 A. If the cost of electrical energy is $0.075 per kilowatt-hour, how much does it cost to operate the light for

ANSWER:

Step 1 of 3

Here we need to calculate the cost that is necessary to operate the light for an hour. If the current through the lamp is . Also, the cost of the electrical energy is given to be $0.075.

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