🔍 Key Concepts

• Ohm's Law and Power Law relationships in DC circuits • What "radiated resistance" (or radiation resistance) means for an antenna • Difference between total circuit resistance and the portion that actually represents radiated RF power

💭 Think About

• Which formula directly links current in an antenna to the power that is actually radiated as RF energy, not just lost as heat? • When you see a term like "radiated resistance" or "radiation resistance", how does that compare to an ordinary resistor in a simple power formula? • Look at each option and ask: Does this describe all electrical power in a circuit, or specifically the power that is radiated by the antenna?

✅ Before You Answer

• Recall the basic power formula involving current and resistance in a simple circuit • Identify which option, if any, replaces ordinary resistance with radiation (radiated) resistance to represent only the radiated portion of power • Confirm that you are focusing on the relationship to radiated power, not just any power dissipated in the system