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Please help 1. If 540 J of energy are absorbed by a resistor in 3.6 min,...

Please help

1. If 540 J of energy are absorbed by a resistor in 3.6 min, what is the power delivered to the resistor in watts?

2. How long must a steady current of 1.4 A exist in a resistor that has 3 V across it to dissipate 12 J of energy?

3. The Average PC draws 78 W. What is the cost of using the PC for 4 h/day for a month of 31 days of the cost is $0.12/kWh?

4. What is the efficiency of a motor that has an output of 0.5 hp with an input of 410 W?

engineering   Electrical-Engineering   
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Answer #1

C3? by Enera (ov) apply torts to move abjec- (o1) Itil tu produd DL power and Hinu is Icnoug an en dre to movt abje timt 216e we have d ime12.Y hrs output 6-5 hp

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