Physics · 2021
JEE Main · 27 July 2021, Shift 2 · Q14
Figure A and B show two long straight wires of circular cross-section (a and b with a < b), carrying current I which is uniformly distributed across…
Figure A and B show two long straight wires of circular cross-section (a and b with a < b), carrying current I which is uniformly distributed across the cross-section. The magnitude of magnetic field $\displaystyle B$ varies with radius $\displaystyle r$ and can be represented as :
Official answer
(2)
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JEE Main 2021 Physics question, with the answer from NTA’s final answer key. Where our answers come from.