Discussion
Two dissimilar metals should be joined with an insulating gasket in order to
Answer: C
Correct answer: break the electrical path between them
A galvanic cell needs four things: an anode, a cathode, an electrolyte and a metallic path for the electrons. The gasket removes the last of these, so no current can circulate however dissimilar the metals are. Insulating sleeves and washers must be used on the bolts as well, or the fastener quietly reconnects what the gasket separated.
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