What is the purpose of connecting a condenser across contact points in a DC circuit?

Connecting a condenser, or capacitor, across contact points in a DC circuit serves the primary purpose of reducing arcing. When the contacts open and close, they can create a sudden interruption in current flow, leading to arcs or sparks between the contact points. This arcing can damage the contacts over time and lead to circuit failure.

By incorporating a condenser across the contact points, it acts to absorb some of the energy from the circuit at the moment of interruption, thereby smoothing out the current flow. This damping effect minimizes the potential for arcing during the opening and closing of the contacts, extending the life of the electrical components and enhancing overall reliability in the circuit operation.

While the other choices may have suggestions that seem plausible, such as enhancing current flow or stabilizing the circuit, they do not directly address the specific function of a condenser in this context, which is primarily focused on mitigating arcing issues during contact operation.