JEE Main 2024 Physics question
Match List I with List II List-I: A. Torque B. Magnetic field C. Magnetic moment D. Permeability of free space List-II: I. [M¹L¹T⁻²A⁻²] II. [L²A¹] III. [M¹T⁻²A⁻¹] IV. [M¹L²T⁻²] Choose the correct answer from the options given below:
Answer: (B)
Solution
Torque ML²T⁻²; B = F/(qv) gives MT⁻²A⁻¹; magnetic moment = current × area gives L²A; μ₀ = B/(nI) gives MLT⁻²A⁻².