JEE Main 2020 Physics question
A long, straight wire of radius a carries a current distributed uniformly over its cross-section. The ratio of the magnetic fields due to wire at distance and 2a, respectively from the axis of the wire is-
Answer: (C)
A long, straight wire of radius a carries a current distributed uniformly over its cross-section. The ratio of the magnetic fields due to wire at distance and 2a, respectively from the axis of the wire is-