Q36. 0.75 A current flows through an iron wire when a battery of 1.5 volts is connected across its ends. The length of the wire 5.0 m and its cross-sectional area is 2.5 x 10-7 m2. What is the resistivity of iron? Physics — Current Electricity — Question 36 of 484A. 9.0 x 10-7 ΩmB. 7.0 x 10-7 ΩmC. 5.0 x 10-7 ΩmD. 3.0 x 10-7 ΩmE. 1.0 x 10-7 ΩmPractice more Physics MCQs for entrance exam preparation on Examora.io.← Previous Question Next Question →