Question

8.why does the kinetic energy of a charged particle moving in a magnetic field remain constant ?

Answer 1

$$\begin{gathered} Whenchargeparticleismovinginuniformmagneticfieldforceonthechargeparticleisgivenby: \\ F=qVB\sin \theta \\ when\theta =90 \\ F\hspace{0.17em}=qVB \\ sochargeparticlemovesonthecircularloophencethisforceisbalancedbythecentripetalforcehencevelocityofthechargeparticleremains\mathrm{co}ns\tan tsokineticenergyremainscoons\tan t. \end{gathered}$$