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When a charged particle moving with velocity \overrightarrow{\mathrm{V}}  is subjected to a magnetic field of induction \overrightarrow{\mathrm{B}}  the force on it is non-zero. This implies that

Option: 1

angle between\overrightarrow{\mathrm{v}} and \overrightarrow{\mathrm{B}} can have any value other than 90^{\circ}


Option: 2

angle between \overrightarrow{\mathrm{v}} and\overrightarrow{\mathrm{B}}  can have any value other than zero and 180^{\circ}


Option: 3

angle between \overrightarrow{\mathrm{v}} and \overrightarrow{\mathrm{B}} is either zero or180^{\circ}


Option: 4

angle between \overrightarrow{\mathrm{v}} and \overrightarrow{\mathrm{B}} is necessarily 90^{\circ}


Answers (1)

best_answer

Force on a particle moving with velocity \mathrm{v} in a magnetic field B is \mathrm{F=q}(\vec{\mathrm{v}} \times \vec{\mathrm{B}}) If angle between\overrightarrow{\mathrm{v}} & \overrightarrow{\mathrm{B}}  is either zero or 180^{\circ}, then value of F will be zero as cross product of \overrightarrow{\mathrm{v}} and \overrightarrow{\mathrm{B}} will be zero. So option (b) is correct.

Posted by

Ajit Kumar Dubey

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