|MadSci Network: Physics|
It seems a common phenomena if you often play with sparks that whenever a spark occurs between two conducting material, the two material seems to have a force which hold them together when you pull them apart during the spark. Spark usually occurs whenever there is a high potential difference between two material (I play that using back emf of a coil) but I recently play with 2-4mF capacitors charged to around 12V and I notice that spark is produced even with such low voltage. I discharge the capacitor in a short circuit and at the instant when I short circuit by putting two wire together (spark may accompany), there is a significant force preventing me from pulling it apart. I wonder what causes that force? if it is under high voltage, it can be due to electrostatic force but it is ruled out as it is only 12V. I am thinking it has something to do with breaking a high current circuit but do not know what it is. Don't worry about me playing with sparks, I do that only using dry cells.
Re: When high current flows through, the connector see
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