What is the RF signal power remaining after a coaxial cable experiences 10 dB of attenuation?

What is the RF signal power remaining after a coaxial cable experiences 10 dB of attenuation?

• A. 50%
• B. 90%
• C. 10%
• D. 100%

Answer: (B)

To determine the RF signal power remaining after a coaxial cable experiences 10 dB of attenuation, it's important to understand how decibels (dB) relate to power levels. The decibel scale is logarithmic, and a change of 10 dB represents a tenfold increase or decrease in power. This means that if an RF signal experiences a loss of 10 dB, its power is reduced to one-tenth of its original value. To translate this into a percentage, if the power is reduced to one-tenth, it means that 10% of the original power remains. In terms of percentage, 10% is indeed what remains after a 10 dB attenuation. Therefore, the correct answer reflects the understanding that with 10 dB of attenuation, only a fraction of the original power — specifically 10% — remains.

To determine the RF signal power remaining after a coaxial cable experiences 10 dB of attenuation, it's important to understand how decibels (dB) relate to power levels.

The decibel scale is logarithmic, and a change of 10 dB represents a tenfold increase or decrease in power. This means that if an RF signal experiences a loss of 10 dB, its power is reduced to one-tenth of its original value.

To translate this into a percentage, if the power is reduced to one-tenth, it means that 10% of the original power remains. In terms of percentage, 10% is indeed what remains after a 10 dB attenuation.

Therefore, the correct answer reflects the understanding that with 10 dB of attenuation, only a fraction of the original power — specifically 10% — remains.