Jee Main
Current Electricity
JEE Main 2022 (Online) 27th June Morning Shift
INTEGER+4 / -12022
The current density in a cylindrical wire of radius 4 mm is 4 \(\times\) 106 Am\(-\)2. The current through the outer portion of the wire between radial distances \({R \over 2}\) and R is ____________ \(\pi\) A.