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Standard XII
Physics
Analysis of Force Equation
Question

A conducting rod AB moves parallel to X-axis in a uniform magnetic field, pointing in the positive X-direction. The end A of the rod gets
206435_c04f5291f67d458d9b8f8657b01a1450.png
  1. positively charged
  2. negatively charged
  3. neutral
  4. first positively charged and then negatively charged

A
negatively charged
B
neutral
C
first positively charged and then negatively charged
D
positively charged
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Solution
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According to right hand palm rule, the Lorentz force on free electrons in the conductor will be directed towards end B. Hence, the end A gets positively charged.

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