NTA Abhyas JEE Main2020PhysicsUnits and DimensionsPractice
The dimensional formula for magnetic flux is
Options
- A[ M L 2 T − 1 A 2 ]
- B[ M 0 L − 2   T 2 A − 2 ]
- C[ M L 3   T − 2   A − 2 ]
- D[ M L 2 T − 2 A − 1 ]
Correct answer
D. [ M L 2 T − 2 A − 1 ]
Step-by-step solution
According to Faraday’s law of electromagnetic induction, E.M.F. = - d ϕ d t so ϕ = [ E M F ] [ T ] = W q [ T ] ϕ = M L   2 T − 2 A T [ T ] = [ M L   2 T − 2 A − 1 ]