Neet
Current Electricity
NEET 2022 Phase 1
MCQ+4 / -12022
A copper wire of length 10 m and radius \(\left( {{{{{10}^{ - 2}}} \over {\sqrt \pi }}} \right)\) m has electrical resistance of 10 \(\Omega\). The current density in the wire for an electric field strength of 10 (V/m) is