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in this quesn correct answer are give 1,2,3. but in 2,3 magnetic field is a vector quantity. so to make it same at 2 points we need direction and magnitude to be same. But in case of straight wire magnitude can be same at a radius but the direction cant be same. So how 2 and 3 are correct AND 4 should be correct because in formula B is inversely prop to r are the answers given wrong ?
Asked by aaryamanmodern | 14 Aug, 2023, 10:20: AM
In the question it is given that magnetic fields are same at two points or at multple number of points.
It refers only magnitude not direction.

Hence (2) and (3) are true.

Staement (4) also true as you have pointed out that magnitude of magnetic field is inversely proportional to the distance.
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