Magnetic Effects Of Current Question 447
Question: A circular coil ABCD carrying a current i is placed in a uniform magnetic field. If the magnetic force on the segment AB is $ \overset{\to }{\mathop{F}}, $ the force on the remaining segment $ BCDA $ is
Options:
A) $ \overset{\to }{\mathop{F}}, $
B) $ \overset{\to }{\mathop{-F}}, $
C) $ 3\overset{\to }{\mathop{F}}, $
D) $ -3\overset{\to }{\mathop{F}}, $
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Answer:
Correct Answer: B
Solution:
[b] Here, $ {{\overset{\to }{\mathop{F}},}_{AB}} $+
${{\overset{\to }{\mathop{F}}}_{BCDA}}$=
$\overset{\to }{\mathop{0}}, $
$ \Rightarrow {{\overset{\to }{\mathop{F}}}_{BCDA}}$=
$-{{\overset{\to }{\mathop{F}}}_{AB}}=-\overset{\to }{\mathop{F}} $
$ (\because F_{AB}=\overset{\to }{\mathop{F}}) $
BETA
