A semicircular ring of copper has an inner radius of 8 cm, radial thickness 6 cm, and axial thickness 4 cm. Calculate the resistance of the ring at 80°C between its two end faces. Specific resistance...

A semicircular ring of copper has an inner radius of 8 cm, radial thickness 6 cm, and axial thickness 4 cm. Calculate the resistance of the ring at 80°C between its two end faces. Specific resistance of copper at 20°C = 1.724 × 10–6 ohm cm. Resistance temperature coefficient of copper at 0°C is 0.0043/°C.