Exercise EE1-04.03 – Temperature coefficient of an aluminium electric line

Prof. Dr. Thorsten Jungmann (last updated 2025-10-27)

Relates to EE1-04 Resistance

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Task

The resistance of an aluminium electric line is $2.20\Omega$ at $12.0°C$.

a) Calculate the resistance of the electric line at the reference temperature of $20°C$!
b) At what temperature has the resistance risen by $6\%$ compared with the value at $12°C$?
c) What resistance would the electric line have at $-10°C$?

You can find the values for the temperature coefficient on the detail page on resistance.

Solution

a) $2.27\Omega$
b) $26.5°C$
c) $2.0\Omega$

▶️ Full worked solution