attached is my attempt to answer part b) of this question. I have been told its wrong but don't know what I'm missing, any ideas?
The speed of an electron in an electric field can vary depending on the strength of the field and the initial velocity of the electron. However, in a constant electric field, the speed of an electron can be calculated using the equation v = E/m, where v is the speed, E is the electric field strength, and m is the mass of the electron.
Yes, the speed of an electron can change in a magnetic field. This is because a magnetic field exerts a force on a moving charged particle, causing it to accelerate. The speed and direction of the electron's motion can be calculated using the Lorentz force equation F = qvB, where F is the force, q is the charge of the electron, v is the velocity, and B is the magnetic field strength.
The speed of an electron in an electric/magnetic field is affected by the strength of the field, the initial velocity of the electron, and the mass and charge of the electron. Additionally, external factors such as temperature and other particles in the field can also affect the speed of the electron.
No, the speed of an electron cannot exceed the speed of light in any field. According to Einstein's theory of relativity, the speed of light is the maximum speed at which anything can travel in the universe. Therefore, the speed of an electron in an electric/magnetic field can never exceed the speed of light.
The speed of an electron in an electric/magnetic field can affect its behavior in various ways. For example, the speed of an electron determines the amount of energy it carries, which can impact its interactions with other particles in the field. Additionally, the speed of an electron can affect its trajectory and the strength of its magnetic field, which can have implications for its overall behavior in the field.