Identify the temperature at which the resistance of copper would be double of its resistance at oC. Given α (temperature coefficient of resistivity) for copper=3.9 x 10-3 oC-1.

MCQs on electric current, ohms law and its limitations, electrons drift and resistivity origin, various materials resistivity, electrical energy and power, resistivity temperature dependence, resistors combination, cells, emf and internal resistance, kirchoffs law, potentiometer, wheatstone and meter bridges.