A uniform magnetic field passes through two areas, A1 and A2.The angles between

Question

A uniform magnetic field passes through two areas, A1 and A2.The angles between the magnetic field and the normals of areas A1 and A2are 30.0° and 60.0°, respectively. If the magnetic flux through the twoareas is the same, what is the ratio A1/A2? (a) 0.577 (b) 1.00 (c) 1.73 (d) 0.816 (e) 1.23 A uniform magnetic field passes through two areas, A1 and A2.The angles between the magnetic field and the normals of areas A1 and A2are 30.0° and 60.0°, respectively. If the magnetic flux through the twoareas is the same, what is the ratio A1/A2? (a) 0.577 (b) 1.00 (c) 1.73 (d) 0.816 (e) 1.23

Explanation / Answer

Magnetic flux through A 1 = Magnetic flux through A2     B A 1 cos 30 = B A 2 cos 60        A 1 / A 2 = cos 60 / cos30                       =0.577

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