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Which types of current flow are opposed by resistance?

DC, AC, and RF current.

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  1. Direct current only
  2. Alternating current only
  3. DC, AC, and RF current ✔

Why: Resistance opposes every kind of current flow: direct current, alternating current, and radio frequency (RF) current.

Huh, didn't know that: Pure resistance converts electrical energy mainly into heat.

The dad joke
Resistance is futile. Well, unless it is more than one ohm.
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References

Answer: DC, AC, and RF current. Resistance opposes every kind of current flow: direct current, alternating current, and radio frequency (RF) current.

  1. HamStudy 2026 Technician pool, T5A11 hamstudy.org/browse/E2_2026/T5A
    Resistance opposes the flow of electric current regardless of the type of current.
    Checked 2026-10-09.

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