In Lab 4B you explored how a velocity of an electron, accelerated by a uniform electric field can be verified by observing the trajectory of that electron in an uniform magnetic field. Imagine that your electron is accelerated in a parallel plate capacitor with potential difference V=324V applied to the plates. After exiting the capacitor the electrons enters the area of a uniform magnetic field B. If the radius of the electron's circular trajectory r=3.036cm what is the magnitude of the magnetic field B