Which comparison correctly distinguishes conductors, resistors, and insulators?
AConductors have high resistance, resistors have negligible resistance, and insulators have low resistance
BConductors and insulators both allow current freely, but resistors do not
CConductors allow current freely, resistors oppose it more than conductors, and insulators practically do not allow it at all
DOnly insulators and resistors are made of solids, while conductors are not
Answer & Solution
Correct answer: C. Conductors allow current freely, resistors oppose it more than conductors, and insulators practically do not allow it at all
The basic distinction is by electrical resistance and ease of current flow. Conductors have negligible resistance and allow current freely, resistors have comparatively higher resistance, and insulators have extremely high resistance so they do not allow electricity to pass. Option A reverses the definitions, and B is incorrect because insulators do not allow current freely.
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