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NTA Abhyas 2020
Exam
NTA Abhyas
Year
2020
Subject
Physics
Chapter
Units and Dimensions

NTA Abhyas 2020 · Physics · Units and Dimensions

The dimensional formula for magnetic flux is

The dimensional formula for magnetic flux is

Options

  1. A[ML2T−1A2][ ML^{2} T^{- 1} A^{2} ]
  2. B[ M^{0} L^{− 2} \text{ }T^{2} A^{− 2} ]
  3. C[ ML^{3} \text{ }T^{− 2} \text{ }A^{− 2} ]
  4. D[ML2T−2A−1][ ML^{2} T^{- 2} A^{- 1} ]

Correct answer

D. [ML2T−2A−1][ ML^{2} T^{- 2} A^{- 1} ]

Step-by-step solution

According to Faraday’s law of electromagnetic induction, E.M.F. = −dϕdt- \dfrac{d ϕ}{d t}

so ϕ=[EMF][T]=[Wq][T]ϕ = [ EMF ][ T ] = \left[\dfrac{W}{q}\right][ T ]

ϕ=[ML 2T−2AT][T]=[ML 2T−2A−1]ϕ = \left[\dfrac{ML{ }^{2}T^{- 2}}{AT}\right][ T ] = [ ML{ }^{2}T^{- 2}A^{- 1} ]
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