JEE Main 25 June 2022 Shift 1 Solved Paper

Section: Physics

Question : 40 of 90

Marks: +1, -0

A long straight wire with a circular cross-section having radius R, is carrying a steady current I. The current I is uniformly distributed across this cross-section. Then the variation of magnetic field due to current I with distance r(r<R) from its centre will be :

[25-Jun-2022-Shift-1]

B∝r2
B∝r
B∝‌
1
r2
B∝‌
1
r

Validate

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