wiper arm

1. Contact consisting of a conducting arm that rotates over a series of fixed contacts and comes to rest on an outlet (synset 104601193)
   is a type of: contact, tangency - (electronics) a junction where things (as two electrical conductors) touch or are in physical contact
   is a part of:

   • rheostat, variable resistor - resistor for regulating current
   • selector, selector switch - a switch that is used to select among alternatives
   same as: contact arm, wiper

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