A Carbon Resistor Has a Resistance of 18 Ω at a Temperature

question 31

Multiple Choice

A carbon resistor has a resistance of 18 Ω at a temperature of 20°C. What is its resistance at a temperature of 120°C? (The temperature coefficient of resistivity for carbon is -5.0 × 10^-4 /C°.)

• A)18 Ω
• B)17 Ω
• C)16 Ω
• D)15 Ω
• E)14 Ω

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