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Why rheostat have current ratings in addition to resistance ratings?
Wiki User
∙ 8y ago
So you don't try to put in more current than they can handle - so they don't catch fire.
Brycen Goodwin
Albert Roberts
So you don't try to put in more current than they can handle - so they don't catch fire.
Wiki User
∙ 11y agoa resistance is just a piece of wire, so if too much current passes through it, it will heat up and may be burned also.
so every resistor has its own current limit, or its power rating that you must work below it if you don't want to see you resistor damaged forever.
SH
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