Electromagnetism calculation help

AI Thread Summary
An electron moving in the positive x-direction is accelerated in the positive y-direction, prompting a discussion on the necessary electric and magnetic field directions to achieve this. The electric field is identified as pointing in the negative y-direction, while the magnetic field's direction remains uncertain. The uniqueness of the field direction choices is questioned, with suggestions that they may depend on whether the fields are considered separately or together. The Lorentz force is mentioned as a key factor in determining the required fields. Understanding these relationships is crucial for solving the problem effectively.
cleggy
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1.

An electron is traveling in the +ve x-direction of an inertial frame T. An acceleration is given to the electron in the +ve y-direction with as large as magnitude as possible.

How do I specify directions of the electric and magnetic fields that will achieve this?

Why are the choice of field directions unique?

2.


3.

Surely the elctric field is pointing in the -ve y direction but not sure about the magnetic field.

I'm not sure though. Also have no clue why it would be unique!
 
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Welcome to PF!

Hi cleggy! Welcome to PF! :smile:
cleggy said:
An electron is traveling in the +ve x-direction of an inertial frame T. An acceleration is given to the electron in the +ve y-direction with as large as magnitude as possible.

How do I specify directions of the electric and magnetic fields that will achieve this?

Why are the choice of field directions unique?

I'm confused … is this two separate questions, a) for a purely electric field and b) for a purely magnetic field, or is it for one joint field? :confused:

If the former, then use the force! :biggrin:

(that's the Lorentz force, of course :wink:)​
 

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