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Grade 11Magnetism

th magnetic field of a cylindrical magnet that has a pole face radius 2.8 cm can b varied sinusiodally between minimum value 16.8 T and maximum value 17.2T at a frequency of 60/pie Hz.Cross-section of th magnetic field created by th magnet is downward,into th plane of th paper.At a radial distance of 2 cm from th axis find th amplitude of th electric field induced by th magnetic fied variation.
kindly help,gettin no clue as to how to proceed...

Profile image of Radhika Batra
12 Years agoGrade 11
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1 Answer

Profile image of ROSHAN MUJEEB
5 Years ago
integral E.dt=−A.dtdB​
E(2πr)=−17[dtd​{17+0.2sin(ωt+ϕ)}]
∴E=2−r​(0.2)ωcos(ωt+ϕ)
∴magnitude of amplitude=2r​(0.2)=240mN/C

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