AP EAMCET · PHYSICS · Electromagnetic Induction
A coil of mean area and having turns is held with its plane perpendicular to a uniform field of . If the coil is turned through in second, then the average induced emf is
- A
- B
- C
- D
Answer & Solution
Correct Answer
(A)
Step-by-step Solution
Detailed explanation
At time, Δt=110=0.1 s Coil turned from θ=0 to 180° The expression for the change in flux is, Δθ=θf-θ Δθ=NBAcos180°-NBAcos0° Δθ=-2NBA The emf induced is, E=-ΔθΔt E=--2NBAΔt E=2NBAΔt…
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