Q124 / 200 · NEET 2002 · Physics

A charge ' $q$ ' moves in a region where the electric field and the magnetic field both exist, then the force on it is:

  • A
    $q(\vec{v} \times \vec{B})$
  • Correct answer
    B
    $q \vec{E}+q(\vec{v} \times \vec{B})$
  • C
    $q \vec{E}+q(\vec{B} \times \vec{v})$
  • D
    $q \vec{E}+q(\vec{B} \times \vec{v})$

Solution

Lorentz force $\vec{F}_v=\vec{F}_e+\vec{F}_m$ $=q \vec{E}+q(\vec{V} \times \vec{B})$

Hence, the correct answer is option: 'B'.

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