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Magnetic flux and induced emf

Question

A loop ABCDEFA of straight edges has six corner points A(0,0,0), B(5,0,0), C(5,5,0), D(0,5,0), E(0,5,5) and F(0,0,5). The magnetic field in this region is B=(3i^+4k^)T. The quantity of flux through the loop ABCDEFA (in Wb) is____. 

Moderate
Solution

ϕ=B.A=3i^+4k^.25i^+25k^              ϕ=3×25+4×25=175 Wb



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