In a particular circuit connection, AWG 18 wire is selected over AWG 22. The reason is that it is having

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  1. Lesser weight
  2. Less thickness
  3. Higher resistance
  4. Higher current carrying capacity

Answer (Detailed Solution Below)

Option 4 : Higher current carrying capacity
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Detailed Solution

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Concept:

AWG (American Wire Gauge) is the standard wire gauge in North America.

In AWG, increasing gauge number denotes decreasing wire diameter.

Also, the resistance of a wire is given by:

\(R=\frac{ρ l}{A}\)    ---(1)

l = Length of the wire

ρ = resistivity of the wire

Analysis:

Hence compared to AWG 22 AWG 18 has a higher thickness (thereby weight per unit length), lesser resistance (since resistance is inversely proportional to wire thickness), and higher current carrying capacity.

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