engineering recuitment PGCIL Trainee Supervisor Electrical Mock Test 2024 Electromagnetic Theory Magnetostatics Ampere's Circuit Law
A long wire carrying a certain current produces a magnetic field of 0.8 Tesla at a distance 0.5 cm. Then magnetic field at a distance of 1 cm is:
1
0.16 Tesla
2
0.2 Tesla
3
0.8 Tesla
4
0.4 Tesla