A simple method, utilizing a noninductive connection, is described for the direct measurement of the resistive component of the potential drop across a semi‐enclosed arc. By this method the resistance, power dissipation, and efficiency are determined for an arc due to a capacitor discharge having a peak current of about 2.5×105A. The minimum resistivity is found to be 1.5×10−3&OHgr; cm, a value lower than values reported previously. A current curve is analyzed to determine resistance of the entire circuit. Inductance interrelation are considered further.