Which of the following expressions represents the magnetic flux through a flat…

PHYSICS · Single correct · A Level · Physics · Fields and their consequences · Fields and their consequences

Problem

Which of the following expressions represents the magnetic flux Φ\Phi through a flat surface of area AA placed in a uniform magnetic field of magnitude BB making an angle θ\theta with the normal to the surface? (a) Φ=BAcos⁡2θ\Phi = BA\cos^{2}\theta (b) Φ=BAcos⁡θ\Phi = \dfrac{BA}{\cos\theta} (c) Φ=BAcos⁡θ\Phi = BA\cos\theta (d) Φ=BAsin⁡θ\Phi = BA\sin\theta

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