engineering recuitment NIELIT Scientific Assistant Mock Test 2025 Electromagnetic Theory Magnetostatics
The magnetic flux density in an air-cooled coil is 10-2 wb/m2. If a cast iron of relative permeability 100 inserted, the flux density will become
1
10-4 Wb/m2
2
10+4 Wb/m2
3
10-2 Wb/m2
4
1 Wb/m2