5. A 2.0 Hp ACU was used for 4 hrs. How much is the cost of energy if the electricity is at P 9.25 per Kw.hr? 6. The wir
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5. A 2.0 Hp ACU was used for 4 hrs. How much is the cost of energy if the electricity is at P 9.25 per Kw.hr? 6. The wir
5. A 2.0 Hp ACU was used for 4 hrs. How much is the cost of energy if the electricity is at P 9.25 per Kw.hr? 6. The wires commonly used in household wiring are made of copper and have a typical diameter d = 2.0 mm. a. Find the resistance of a piece of this wire of length 5.0 m. Resistivity of copper wire is 1.7 x 1040 m. b. Assume a battery with an emf of 12 V is attached to the ends of this wire. What is the current? 7. A heater has a resistance of 20 and it operates on 240 V. b. What thermal energy in joules is supplied by the heater in 10 bec? ?
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