7. A copper wire has a resistance of 4.75 at room temperature. What is the wire’s resistance at 86.4 °C?
Thermal conducticity coefficient of Copper ,
a = 3.9 *10^-3 1/degree C
Now, at 86.4 degree
wire's resistance = 4.75 * (1 + 3.9 *10^-3 * (86.4 - 20))
wire's resistance = 5.98 Ohm
the wire's resistance is 5.98 Ohm
7. A copper wire has a resistance of 4.75 at room temperature. What is the...
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