AP EAMCET · PHYSICS · Electromagnetic Induction
A coil of area is placed in a uniform magnetic field of lb. , with its plane perpendicular to the field. The coil rotates at a uniform rate to complete the revolution in . find the average emf . in the coil during intervals when the coil rotates from
i. to position
ii. to position
ii. to position
iv. to position
- A
- B
- C
- D
Answer & Solution
Correct Answer
(A)
Step-by-step Solution
Detailed explanation
Magnetic flux is given by ϕ=BAcosθ e=-∆ϕ∆t=-ϕ2-ϕ1t2-t1 case i : for 0° to 90° position e=-BAcos90-BAcos0t2-t1=0.3×102=32mV case ii : for 90° to 180° position…
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