The Reissner Nordstrom metric considers charge apart from mass in its composition. Both charge and mass appear in the temporal as well as the spatial components of the metric. By considering a large amount of charge against a small amount of mass we can have an estimate the individual contribution of electric charges towards the curvature of space—in influencing clock-rates and spatial separations The metric suggests an interaction between charge and mass. We consider a curved space created by a massive charged body,having a significal amount of charge. Now, a test charge[mass very small] or a test mass[chargeless] will follow the same geodesic so far as the metric is concerned . In the extremization of proper-time we consider the metric properties. But we do not consider the intrinsic[fundamental] properties[like charge,mass and spin of the test particle] of the particles whose motion would be investigated by the metric. How does one resolve this issue?