Cost of Energy

  • Thread starter GlobalDuty
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  • #1
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Homework Statement


Compute the cost per day of operating a lamp that draws a current of 1.90 A from a 110 V line. Assume the cost of energy from the power company is $0.0620 / kWh. NOTE: Enter your response with tenths precision.


The Attempt at a Solution


1.90*110V*.0620*24 = .310992
but this answer is wrong
 

Answers and Replies

  • #2
PhanthomJay
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Homework Statement


Compute the cost per day of operating a lamp that draws a current of 1.90 A from a 110 V line. Assume the cost of energy from the power company is $0.0620 / kWh. NOTE: Enter your response with tenths precision.


The Attempt at a Solution


1.90*110V*.0620*24 = .310992
but this answer is wrong
you did divide by 1000 W/kW, but the problem asks for the answer to the nearest tenth (nearest dime).
 
  • #3
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yeah i divided by 1000 at the end, but .3 is wrong
 
  • #4
PhanthomJay
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yeah i divided by 1000 at the end, but .3 is wrong
Try $0.30
 

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