In the American Wire Gauge system, higher gauge number indicates what?

In the American Wire Gauge system, higher gauge number indicates what?

• A. Larger cross-sectional area
• B. Smaller cross-sectional area
• C. Lower resistance
• D. Higher current capacity

Answer: (B)

In American Wire Gauge, the gauge number and the wire’s diameter move in opposite directions: as the number gets higher, the wire becomes thinner. That means the cross-sectional area is smaller for higher gauges. A smaller cross-sectional area increases resistance per unit length, and it also reduces how much current the conductor can safely carry (ampacity) because thinner wires heat up more for the same current. So the statement that higher gauge indicates a smaller cross-sectional area is the best description. The other ideas describe thicker wires, lower resistance, or higher current capacity, which correspond to lower gauge numbers.

In American Wire Gauge, the gauge number and the wire’s diameter move in opposite directions: as the number gets higher, the wire becomes thinner. That means the cross-sectional area is smaller for higher gauges. A smaller cross-sectional area increases resistance per unit length, and it also reduces how much current the conductor can safely carry (ampacity) because thinner wires heat up more for the same current. So the statement that higher gauge indicates a smaller cross-sectional area is the best description. The other ideas describe thicker wires, lower resistance, or higher current capacity, which correspond to lower gauge numbers.