Answer:
Wavelength = 5,000,000 m
Explanation:
Power line has extremely low frequency and produce and transmit magnetic and electric over long distance. The radiation from power line are electromagnetic radiation since it can be classified as Radiowave. Hence using the formula:
Velocity of propagation=frequency
× wavelength
We use Velocity= c = 3 × 10 ^8 m/s
f = 60Hz
wavelength = 3 ×10^8/60
Wavelength = 5,000,000 m
We can ignore the transmission line effect when the line length is less than (1/50)wavelength or (1/20)wavelength.
Seeing the transmission line length given is 1000m, we ignore the effect of transmission line as negligible
