JEE Main202522 Jan 2025Morning ShiftPhysicsUnits and DimensionsActual
If B is magnetic field and ₀ is permeability of free space, then the dimensions of (B / ₀ ) is
Options
- AML ^2 ~T ⁻² ~A ⁻¹
- BMT ⁻² ~A ⁻¹
- CL ⁻¹ ~A
- DLT ⁻² ~A ⁻¹
Correct answer
C. L ⁻¹ ~A
Step-by-step solution
For a current carrying loop at centre aligned & B= ₀ i 2 R & B ₀ i R [ AL ⁻¹ ] aligned