Question

(5)
At the centre of which of the following four circular rings is the magnetic
field strongest, for equal magnitude of current?​

Answer 1

Answer:

Explanation:

B=μi/2r

So less is the value of r, more strongest is the field

So B is strongest in (d) which is option-2

Please mark as brainliest

Answer 2

Answer:

option D is the answer

Explanation:

D-  2...