Question

question 17
which of the following accurately describes the resistance of materials?
a. insulators have high resistances while conductors have low resistances.
b. insulators have low resistances while conductors have high resistances.
c. conductors have very little charge while semiconductors hold a lot of charge.
d. insulators hold a large amount of charge while semiconductors hold very little charge.

Explanation:

To solve this, we analyze each option:

• Option A: Insulators (e.g., rubber) impede electron flow, so they have high resistance. Conductors (e.g., copper) allow easy electron flow, so they have low resistance. This matches the definition of resistance in materials.
• Option B: Contradicts the properties of insulators and conductors. Insulators should have high, not low, resistance.
• Option C: Resistance is about charge flow, not "how much charge" a material holds. This misinterprets resistance.
• Option D: Similar to C, resistance relates to charge mobility, not charge storage. This is incorrect.

Answer:

A. Insulators have high resistances while conductors have low resistances.