Which condition occurs when the conductive surfaces (plates) come into physical contact with each other?

Which condition occurs when the conductive surfaces (plates) come into physical contact with each other?

• A. Open Capacitors
• B. Counter EMF
• C. Shorted Capacitors
• D. Transformer Theory of Operation

Answer: (C)

When the conductive surfaces of a capacitor touch, the dielectric is effectively bypassed and the two plates become a single, low-resistance path. This creates a short across the capacitor, so any charge on the plates is dumped rapidly through the conducting link. The result is a near-zero voltage across the capacitor and a potential surge of current limited only by the wiring and the capacitor’s own resistance. This is what we mean by a shorted capacitor. Open capacitors would have no current path and thus behave like an open circuit. Counter EMF involves inductors opposing changes in current, not capacitor plate contact. Transformer operation describes mutual induction in a transformer, not a short across capacitor plates.

When the conductive surfaces of a capacitor touch, the dielectric is effectively bypassed and the two plates become a single, low-resistance path. This creates a short across the capacitor, so any charge on the plates is dumped rapidly through the conducting link. The result is a near-zero voltage across the capacitor and a potential surge of current limited only by the wiring and the capacitor’s own resistance. This is what we mean by a shorted capacitor.

Open capacitors would have no current path and thus behave like an open circuit. Counter EMF involves inductors opposing changes in current, not capacitor plate contact. Transformer operation describes mutual induction in a transformer, not a short across capacitor plates.