A) \[11\,\,q\]
B) \[5\,q\]
C) \[3\,q\]
D) \[2\,q\]
Correct Answer: A
Solution :
[a] Lorentz force acting on the particle \[\overset{\to }{\mathop{F}}\,=q\left[ \overset{\to }{\mathop{E}}\,+\overset{\to }{\mathop{v}}\,\times \overset{\to }{\mathop{B}}\, \right]\] \[=q\left[ 3\hat{i}+\hat{j}+2\hat{k}+\hat{i}(-12-1)-\hat{j}(-9-1)+k(3-4) \right]\] \[{{F}_{y}}=11q\hat{j}\]
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