Electrical components possess a negative and a positive side.This polarity permits the application of
A)resistance across the poles to inhibit electron flow.
B)an electromotive force (emf) to enable current flow.
C)a spark gap to check amperage.
D)all of the above

Question

Quizplus · Accepted Answer

Polarity permits the application of an electromotive force (emf) to enable current flow. Resistance across the poles inhibits electron flow, but this is not a common use of polarity. Spark gaps are used to check voltage, not amperage. Therefore, only option B is correct.

Electrical Components Possess a Negative and a Positive Side