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Sahay Sir > Question Answers > Cengage NEET by C.P Singh > Part 2 > Chapter 6 - Magnetic Force, Moment and Torque > A proton goes undeflected in a crossed electric and magnetic field (the fields are perpendicular to each other) at a speed of 2.0 x 10^5m/s. The velocity is perpendicular to both the fields. When the electric field is switched off, the proton moves along a circle ol radius 4.0cm. Find the magnitudes of the electric and the magnetic fields. Take the mass of the proton = 1.6 x 10^-27kg.

A proton goes undeflected in a crossed electric and magnetic field (the fields are perpendicular to each other) at a speed of 2.0 x 10^5m/s. The velocity is perpendicular to both the fields. When the electric field is switched off, the proton moves along a circle ol radius 4.0cm. Find the magnitudes of the electric and the magnetic fields. Take the mass of the proton = 1.6 x 10^-27kg.

Maximum kinetic energy of the positive ion in the cyclotron is.