railway RRB JE (CBT I + CBT II) Mock Test 2024 Electromagnetic Theory Magnetostatics Magnetostatic Field
An air core toroid with 500 turns having a cross section area of 6 cm2 and a mean radius of 15 cm is carrying a current of 5 A. What is the magnetic flux density at the mean radius?
1
2653 T
2
1/300 T
3
2123 T
4
1/400 T