Which type of RADAR Absorbent Material (RAM) reduces RCS by attacking the magnetic field of incoming RADAR energy?

The correct answer focuses on Ablative Radar Absorbent Material (RAM) and highlights its unique function in reducing radar cross-section (RCS). Ablative RAM operates by absorbing radar energy through a chemical reaction that occurs upon impact, which can effectively disrupt and diminish the magnetic field of incoming radar waves.

By reducing the intensity of the radar signals that reflect back to the source, ablative materials play a critical role in stealth technology. This process not only reduces the radar signature but also helps in managing the energy from the radar, making it less detectable.

In contrast, other types of RAM have different absorption mechanisms. Non-resonant RAM typically operates across a broad frequency range without focusing on magnetic field interaction. Resonant RAM works specifically at certain frequencies, designed to absorb energy at one or more radar bands but may not engage with incoming rays in the same manner as ablative materials. Active cancellation relies on technology to transmit counteracting signals to cancel out incoming radar energy, which is a different principle altogether. Each of these materials has its own applications and capabilities, but for the context of manipulating the magnetic field of incoming radar energy, ablative RAM is the most effective choice.