A) 8 N in z direction
B) 4 N in z direction
C) 8 N in y direction
D) 8 N in z direction
Correct Answer: D
Solution :
| [d] Key Idea When a charge q moves with velocity\[\vec{v}\] inside magnetic field of strength \[\vec{B},\] then force on charge is called magnetic Lorentz force. The magnetic Lorentz force is in the direction of vector \[\vec{v}\times \vec{B}\]. |
| Magnetic Lorentz force \[\vec{F}=q(\vec{v}\times \vec{B})\] |
| \[=-\,{{210}^{-6}}[2\times 2\times {{10}^{6}}]\] |
| = 8 N along negative z-axis |
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