Jee Main
Current Electricity
JEE Main 2021 (Online) 26th August Morning Shift
MCQ+4 / -12021
What equal length of an iron wire and a copper-nickel alloy wire, each of 2 mm diameter connected parallel to give an equivalent resistance of 3\(\Omega\) ?
(Given resistivities of iron and copper-nickel alloy wire are 12 \(\mu\)\(\Omega\) and 51 \(\mu\)\(\Omega\) cm respectively)
(Given resistivities of iron and copper-nickel alloy wire are 12 \(\mu\)\(\Omega\) and 51 \(\mu\)\(\Omega\) cm respectively)