Number 10 Copper Wire (Radius = 1

question 23

Multiple Choice

Number 10 copper wire (radius = 1.5 mm) is commonly used for electrical installations in homes.What is the voltage drop in 20 m of #10 copper wire if it carries a current of 12 A? (The resistivity of copper is 1.7 × 10−⁸ Ω⋅m. )

• A)0.58 V
• B)0.48 V
• C)2.7 V
• D)2.4 V
• E)0.34 V

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