Question 11: NCERT Solutions for 12th Class Physics: Chapter 4-Moving Charges and Magnetism
In a chamber, a uniform magnetic field of 6.5 G (1 G = 10-4 T) is maintained. An electron is shot into the field with a speed of 4.8 × 106 m s-1 normal to the field. Explain why the path of the electron is a circle. Determine the radius of the circular orbit. (e= 1.6 × 10-19 C,me = 9.1 × 10-31 kg)
The magnetic force ƒ = quB act normal to the direction of motion, thus provide the necessary centripetal force to follow the circular path.
Check the complete chapter with solutions.
NCERT Solutions for 12th Class Physics: Chapter 4-Moving Charges and Magnetism