A 1 KW signal is transmitted using a communication channel which provides attenuation at the rate of – 2dB per km. If the communication channel has a total length of 5 km, the power of the signal received is [gain in dB = 10 log \(\left(\frac{P_o}{P_i}\right) \) ]
1
900 W.
2
100 W.
3
990 W.
4
More than one of the above
5
None of the above