Electromagnetic Induction And Alternating Current Ques 21
21. A circular loop of radius $R$, carrying current $I$, lies in $x-y$ plane with its centre at origin. The total magnetic flux through $x-y$ plane is
$(1999,2 \mathrm{M})$
(a) directly proportional to $I$.
(b) directly proportional to $R$.
(c) inversely proportional to $R$.
(d) zero.
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Answer:
Correct Answer: 21.(d)
Solution:
Formula:
- Total magnetic flux passing through whole of the $x-y$ plane will be zero, because magnetic lines form a closed loop. So, as many lines will move in $-z$ direction same will return to $+z$ direction from the $x-y$ plane.
BETA
