TS EAMCET · Physics · Electromagnetic Induction
A wire loop enclosing a semi-circle of radius is located on the boundary of a uniform magnetic field of induction At time , the loop is set into rotation with velocity ? about its axis , coinciding with a line of vector on the boundary as shown in the figure. The emf induced in the loop is
- A
- B
- C
- D
Answer & Solution
Correct Answer
(A)
Step-by-step Solution
Detailed explanation
dϕ=B→·ds→=Bds =B12ϕR2 (ϕ=Sector angle) Magnitude of induced emf =-dϕdt =B12R2dϕdt =BR2ω2
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