AIPMT | 2014Current Electricity and Electrical InstrumentHard
Question
Two cities are 150 km apart. Electric power is sent from one city to another city through copper wires. The fall of potential per km is 8 volt and the average resistance per km is 0.5 Ω The power loss in the wire is
Options
A.19.2 W
B.19.2 kW
C.19.2 J
D.12.2 kW
Solution
Resistance = 150 × 0.5 = 75 Ω
I =
= 16 A
P = I2R = (16)2 × 75 W = 19200 = 19.2 kW
I =
= 16 AP = I2R = (16)2 × 75 W = 19200 = 19.2 kW
Create a free account to view solution
View Solution FreeTopic: Current Electricity and Electrical Instrument·Practice all Current Electricity and Electrical Instrument questions
More Current Electricity and Electrical Instrument Questions
A continuous beam of electrons emitted by a heating filament are accelerated in free space by an electric field as shown...In a potentiometer arrangement E1 is the cell establishing current in primary circuit E2 is the cell to be measured. AB ...Eels are able to generate current with biological cells called electroplaques . Theelectroplaques The electroplaques is ...Find the resistance of a wire frame shaped as a cube (figure) when measured between points 1-7...By error, a student places moving - coil voltmeter V (nearly ideal) in series with the resistance in a circuit in order ...