Question

1. which type of rubber would have the greatest resistance? a long piece of rubber a cold piece of rubber a thick piece of rubber

Explanation:

• Resistance formula: $R =

ho\frac{l}{A}$ (where $
ho$ is resistivity, $l$ is length, $A$ is cross - sectional area). A longer length ($l$) increases resistance. A thicker piece (larger $A$) decreases resistance.

• For temperature, in general, for most materials (including rubber in some temperature ranges), as temperature decreases, the number of free charge carriers may decrease (more restricted movement), which can increase resistance.

Answer:

a cold piece of rubber