question_answer 19)

  A loop, made of straight edges has six corners at A (0, 0, 0), B (L, O, 0), C (L, L, 0), D (0, L, 0), E (0, L, L) and F (0, 0, L). A magnetic field is present in the region. The flux passing through the loop ABCDEFA (in that order) is (a)                         (b) (c)                  (d)

Answer:

  (b) Here, Area vector of ABCD =                                     Area vector of DEFA =     Total area vector, Total magnetic flux,