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Moving Charges and Magnetism question

2002 · Q133
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Moving Charges and Magnetism question

2002 · Q133

NEETPhysicsMoving Charges and MagnetismMCQ+4 / −1
A charge q moves in a region where electric field and magnetic field both exist, then force on it is
  1. A
    q(v→×B→)q\left( {\overrightarrow v \times \overrightarrow B } \right)q(v×B)
  2. B
    qE→+q(v→×B→)q\overrightarrow E + q\left( {\overrightarrow v \times \overrightarrow B } \right)qE+q(v×B)
  3. C
    qE→+q→(B→×v→)q\overrightarrow E + \overrightarrow q \left( {\overrightarrow B \times \overrightarrow v } \right)qE+q​(B×v)
  4. D
    qB→+q→(E→×v→)q\overrightarrow B + \overrightarrow q \left( {\overrightarrow E \times \overrightarrow v } \right)qB+q​(E×v)
View written solutionFree

Correct answer: B

Lorentz forece

FL→=Fe→+Fm→\overrightarrow {{F_L}} = \overrightarrow {{F_e}} + \overrightarrow {{F_m}} FL​​=Fe​​+Fm​​

= qE→+q(v→×B→)q\overrightarrow E + q\left( {\overrightarrow v \times \overrightarrow B } \right)qE+q(v×B)

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