A square loop of side a is rotating about its diagonal with angular velocity ω in a perpendicular magnetic field B → . It has 10 turns. The emf induced is

Question

A square loop of side a is rotating about its diagonal with angular velocity ω in a perpendicular magnetic field B → . It has 10 turns. The emf induced is, B a 2 sin ⁡ ω t, B a 2 cos ⁡ ω t, 5 2 B a 2, 10 B a 2 ω sin ⁡ ω t

MARKS App · Accepted Answer

Magnetic flux linked with loop at any instant, ϕ = B A cos ⁡ θ ϕ = B a 2 cos ⁡ ω t Emf induced ∴ ε = - N d ϕ d t = N B a 2 ω sin ⁡ ω t ε = 10 B a 2 ω sin ⁡ ω t

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