Question

which two wire properties would provide the greatest resistance to the flow of a current?
o short, thin
o long, thin
o hot, thick
o cool, thick

Explanation:

The resistance formula is $R =
ho\frac{l}{A}$, where $
ho$ is resistivity (depends on material and temperature), $l$ is length, and $A$ is cross - sectional area. Resistance increases with length and decreases with cross - sectional area. Also, for metals, resistance increases with temperature. A long wire has more length ($l$ is large), a thin wire has a small cross - sectional area ($A$ is small), and a hot wire has higher resistivity ($
ho$ is large for metals). So long and thin wires provide high resistance, and hot wires also increase resistance.

Answer:

B. long, thin