Jee Main
Current Electricity
JEE Main 2022 (Online) 27th June Evening Shift
INTEGER+4 / -12022
The current density in a cylindrical wire of radius r = 4.0 mm is 1.0 \(\times\) 106 A/m2. The current through the outer portion of the wire between radial distances \({r \over 2}\) and r is x\(\pi\) A; where x is __________.