Teaching EMRS PGT Mock Test 2023 Physics Moving Charges and Magnetism Magnetic Force on a Current-Carrying Wire
Find the ratio of the magnetic field induction at the centre of a ring and the magnetic field induction at the centre of a quarter ring having same electric current and radius.
1
1 : 8
2
1 : 4
3
4 : 1
4
8 : 1