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You leave your 75 W portable color TV on for 6 hours each day and you do not pay attention to the cost of electricity. If the dorm (or your parents) charged you for your electricity use and the cost was $0.3 /kW · h, what would be your monthly (30 day) bill?Answer in units of dollars.

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Answer:

Total bill will be $4.05

Explanation:

We have given that the power of the color TV P = 75 watt

It is daily used for 6 hours for 30 days

So total time t = 30×6 = 180 hour

We know that energy is given by [tex]Energy=power\times time[/tex]

So energy [tex]E=75\times 180=13500=13.5KWH[/tex]

We have given cost per kWh = $0.3

So total cost = 0.3×13.5 = $4.05

So total bill will be $4.05

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