time an electron spent in a magnetic field

[luisabejarin]

Hello.. Does anyone know how to find the time t an electron spent in a magnetic field region if the only thing given are the magnetic field B=0.5T and angle of deflection 30 degrees?

[Sourabh N]

You can find time period T of electron as you know B. Electron travels 360 deg in T, so what time will it take to travel 30 deg, you can find.

[luisabejarin]

wow!thanks,i got it..i understand..thank u very much!