What is the resistance of a copper wire with a length of 10 meters and a cross-sectional area of 0.5 square millimeters?
| September 7, 2021 | education
Given:
L = 10 meters – the length of the copper wire;
S = 0.5 square millimeters – cross-sectional area of a copper wire;
r = 0.018 Ohm * mm ^ 2 / m – copper resistivity.
It is required to determine R (Ohm) – the resistance of the copper wire.
To determine the resistance of a copper wire, you need to use the following formula:
R = k * L / S = 0.018 * 10 / 0.5 = 0.18 / 0.5 = 0.36 Ohm.
Answer: the resistance of the copper wire is 0.36 ohms.
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