Question Answers

Church released
Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > A current I flows in a long straight wire (into the plane of the paper) with cross-section having the from of a circular are of radius R a shown in the figure. Find the magnetic induction at the point O.

A current I flows in a long straight wire (into the plane of the paper) with cross-section having the from of a circular are of radius R a shown in the figure. Find the magnetic induction at the point O.

In a hydrogen atom the electron moves around the nucleus in a circular orbit of radius 5×10 −11 m. Its time period is 1.5×10 −16 s. The current associated with the electron motion is (Charge of electron is 1.6×10 −19 C)