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Amateur Radio Roundtable July 22, 2026

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170 views0likes2:16:15w5kubOriginal Release: 2026-07-23

Equivalent resistance is the total resistance of a circuit when multiple resistors are connected in series, parallel, or combinations of both. For series circuits, resistances add directly (R_total = R1 + R2 + R3). For parallel circuits, the reciprocal of total resistance equals the sum of reciprocals of individual resistances (1/R_total = 1/R1 + 1/R2 + 1/R3). Complex circuits can be simplified by identifying series and parallel combinations, reducing them step-by-step to find the equivalent resistance. This concept is fundamental for understanding circuit behavior and is essential for new ham radio operators learning electronics.