The series resistor serves to protect the contact from a large surge of current.

The voltage difference between the bias and the capacitor is seen across the series resistor.

Although it may seem counterproductive, a series resistor is included between the regulator output and the load.

The current in the coil rises rapidly to a value limited by the series resistor when the core reaches saturation.

One was connected via a series resistor to the battery supply.

The distributed resistance of the conductors is represented by a series resistor (expressed in ohms per unit length).

The rapid switching wastes less energy than series resistors.

They see the total resistance of the circuit which is the sum of the two series resistors.

This can involve series resistors or current-regulated power supplies.

A series resistor limits the current when the track circuit is short-circuited, saving battery power.