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Physics - EMI/AC Question with Solution | TestHub

PhysicsEMI/ACMotional & Rotational EMFEasy2 minPYQ_2020

PhysicsEasysingle choice

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

Options:

Answer:

Solution:

Magnetic flux linked with loop at any instant,

$ϕ = B A \cos θ$

$ϕ = B a^{2} \cos ω t$

Emf induced

$∴ ε = - N \frac{d ϕ}{d t} = N B a^{2} ω \sin ω t$

$ε = 10 B a^{2} ω \sin ω t$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:EMI/ACSubtopic:Motional & Rotational EMF

⏱ 2mℹ️ Source: PYQ_2020

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