A) an accelerating force
B) a retarding force
C) a radial force
D) no force
Correct Answer: D
Solution :
Inside a solenoid magnetic field is along axis. The force on moving charged particle in magnetic field \[F=q\,\upsilon \,B\,\sin \theta \] particle is moving in direction of magnetic field \[\therefore \] \[\theta ={{0}^{o}}\] \[\therefore \] \[F=0\] { \[\sin 0=0\]}
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