Teaching HTET TGT Level 2 - 2024 Mock Test Physics Moving Charges and Magnetism Magnetic Field due to a Current Element
The magnitude of the magnetic field at a distance 'R' from a long, straight wire carrying a current 'I' is equal to ____________. ( 'µ0' is permeability of free space)
1
μoI / (πR2)
2
2μoI / R
3
μoI / (2πR)
4
μoI / R2