Extra exam question E0A06
Subelement E0, SAFETY· Group E0A
Why are there separate electric (E) and magnetic (H) MPE limits at frequencies below 300 MHz?
- A.The body reacts to electromagnetic radiation from both the E and H fields
- B.Ground reflections and scattering cause the field strength to vary with location
- C.E field and H field radiation intensity peaks can occur at different locations
- D.All these choices are correct (correct answer)
WhySeparate electric and magnetic field MPE limits exist below 300 MHz because the body reacts to both fields, ground reflections and scattering cause field strength to vary with location, and E and H field intensity peaks can occur at different locations. Separate electric (E) and magnetic (H) field MPE limits exist below 300 MHz because the human body responds to both types of field, ground reflections and scattering can make field strength vary meaningfully with location, and the E and H field intensity peaks don't necessarily occur at the same point in space, answer D. Since all three of these are genuine, real reasons for maintaining separate E and H field limits, no single one alone is the complete answer.
Published 2026-08-28 · Last updated 2026-08-28 · Question text is verbatim from the 2024-2028 NCVEC Element 4 pool (public domain); the explanation above is original writing, see our methodology.
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