A power transmission cable has a resistance of 12 ohms per meter, if it loses 500watts per km of length to heat, what is the output power if it delivers a p.d of 200000volts?
A power transmission cable has a resistance of 12 ohms per meter, if it loses 500watts per km of length to heat, what is the output power if it delivers a p.d of 200000volts?
Moved to physics. Could you post your working out please?
Yeah I made a silly mistake! I multiplied 500W/km with 1000m! But i needed to divide it! As with decrease in distance...power dissipated will decrease!! 😊
Yeah I made a silly mistake! I multiplied 500W/km with 1000m! But i needed to divide it! As with decrease in distance...power dissipated will decrease!! 😊
Another question! What does "reflected and transmitted waves will always be in antiphase and therefore cancel out each other in a stationary wave" mean? If they cancel out eachother then how can a wave form? Is the statement true?