A charged sphere of mass m and charge - q starts sliding along the surface of a smooth hemispherical bowl, at position P. The region has a transverse uniform magnetic field B. Normal force by the surface of bowl on the sphere at position Q is

\[mg\,\sin \theta -qB\sqrt{2g\,R\,\sin \,\theta }\]

\[mg\,\sin \theta +qB\sqrt{2g\,R\,\sin \,\theta }\]

\[3\,mg\,\sin \theta +qB\sqrt{2g\,R\,\sin \,\theta }\]

\[3\,mg\,\sin \theta -qB\sqrt{2g\,R\,\sin \,\theta }\]

A charged sphere of mass m and charge - q starts sliding along the sur

1.	A charged sphere of mass m and charge - q starts sliding along the surface of a smooth hemispherical bowl, at position P. The region has a transverse uniform magnetic field B. Normal force by the surface of bowl on the sphere at position Q is
A.	\[mg\,\sin \theta +qB\sqrt{2g\,R\,\sin \,\theta }\]
B.	\[3\,mg\,\sin \theta +qB\sqrt{2g\,R\,\sin \,\theta }\]
C.	\[mg\,\sin \theta -qB\sqrt{2g\,R\,\sin \,\theta }\]
D.	\[3\,mg\,\sin \theta -qB\sqrt{2g\,R\,\sin \,\theta }\]
Answer» C. \[mg\,\sin \theta -qB\sqrt{2g\,R\,\sin \,\theta }\]