A 0.15 millimeter diameter copper wire is 15 meter long.
Part A Determine its resistance?
Part B Determine the power dissipation in the wire if the potential difference across its ends is 10 V?
Part C Repeat part (a) if the wire is immersed in liquid nitrogen at 77 K.
Part D Repeat part (b) if the wire is immersed in liquid nitrogen at 77 K.