The power of your transmitter is 100 watts and your transmission line introduces a loss of 6 dB. How much power is delivered to the antenna?

In radio electronics, a 3 dB change in power corresponds to a factor of two. A 3 dB loss means the power is halved, and a 6 dB loss is mathematically equivalent to two consecutive 3 dB losses. Starting with a 100-watt transmitter, the first 3 dB loss halves the power to 50 watts. The second 3 dB loss halves that 50 watts again, resulting in exactly 25 watts delivered to the antenna. Choosing 50 watts is incorrect because it only accounts for a single 3 dB loss, while the other distractors do not follow the logarithmic decibel formula for power.