swer you will be awarded 4 Marks and for WRONG answer there

Last updated: 6/7/2023

swer you will be awarded 4 Marks and for WRONG answer there is a negative marking of 1 Mark N A long current carrying wire is bent in the following shape What is the magnetic field at it s centre O 1 3 oi 8r 3 Ho 4x r 37 2 0 U 3 oi 8r 4