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Moving Charges and Magnetism — Physics STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 SciencePhysicsMoving Charges and Magnetism1 Mark
Question
Write the expression, in a vector form, for the Lorentz magnetic force$\overrightarrow{\text{F}}$ due to a charge moving with velocity $\overrightarrow{\text{V}}$in a magnetic field $\overrightarrow{\text{B}}.$  What is the direction of the magnetic force?
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Answer

$\overrightarrow{\text{F}} = \text{q}( \overrightarrow{\text{v}}\times\overrightarrow{\text{B}})$
Perpendicular to the plane formed by$\overrightarrow{\text{v}}$and $\overrightarrow{\text{B}}/\overrightarrow{\text{F}}\bot\overrightarrow{\text{v}}\text{and }\overrightarrow{\text{F}}\bot \overrightarrow{\text{B}}.$

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