A Note on the Comparison of Inductances, or of an Inductance and a capacity by an Electrometer Method
Alva W. Smith · Physical Review · 1919
A method of comparing inductances is described. This method makes use of an electrometer whose quadrants are connected across a condenser in series with the inductance and whose needle is connected to the middle of a high resistance shunting the condenser and inductance. An equation connecting the deflection of the electrometer with the inductance, capacity and current in the circuit is developed. This equation states that the deflection of the electrometer is proportional to the inductance, to the square of the current and inversely proportional to the capacity. This equation is checked experimentally. By this method several inductances are measured and the results found to be in agreement with those obtained with an A. C. bridge.