A cable 4km long and of total resistance 1 ohm carries electric current from a generator producing 100kW at 10,000 Volts. The current in amperes in the cable is:
Correct answer: A. 10
- A. 10
- B. 10 000
- C. 1000
- D. 100 000
Explanation
Current is given as , I = power / voltage Where power = 100kW ( 1 Kw= 1000 watts ) So power = 100,000 Watts Voltage = 10,000 volts So the equation becomes , Current = 100,000 / 10,000 Current = 10 amperes Mathematically options B , C & D are incorrect
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