Question

solve this plz as soon as possible​

Answer 1

Answer:

a) 0 b) 2iR c) 2iR

Explanation:

magnetic force= iLbsintheta

here L is displacement

displacement between a and b which is in semi circular path is diameter ie 2R

a) angle between L and B is 0 degree ie sin 0 is 0

F= 0

b) angle between L and B is 90 degree ie sin 90 is 1

F= I ×2R×1 = 2iR

c) angle between L and B is 90 degree ie sin 90 is 1

F= 2iR

note : displacement direction is from a to b