Uniform electric and magnetic field

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Homework Help Overview

The discussion revolves around a particle moving through uniform electric and magnetic fields, specifically focusing on determining the electric field required to keep the particle undeflected. The subject area includes concepts from electromagnetism, particularly the Lorentz Force Law.

Discussion Character

  • Exploratory, Assumption checking, Problem interpretation

Approaches and Questions Raised

  • Participants discuss the application of the Lorentz Force Law, questioning how to balance the electric and magnetic forces to achieve zero deflection. Some participants explore the relationship between the electric field and the magnetic force, while others suggest variations in the equations used.

Discussion Status

The discussion is ongoing, with participants actively engaging in exploring the relationships between the forces involved. Some guidance has been offered regarding the use of the Lorentz Force Law, but there is no explicit consensus on the next steps or methods to proceed.

Contextual Notes

Participants are navigating the complexities of the problem without complete information on the particle's behavior in the fields. There is an emphasis on understanding the conditions for zero deflection, but specific values or further details are not provided.

aiika
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Homework Statement



a particle with initial velocity Vo=6.00 x10r^3 m.s-1 in the +x direction enters a region of uniform electric and magnetic fields. the magnetic field in the region is B=0.300 T in the -y direction. calculate the magnitude and direction of the electric field in the region if the particle passes through undeflected for a particle
a) +0.400x 10raise to -8 C
b)-0.400x 10 raise to -8 C

Homework Equations



can i use the Lorentz Force Law

F=qE+qvxB

The Attempt at a Solution



i'm stuck and i don't know how to start. HELP please.it will be higly appreciated :D

Thanks in advance
 
Last edited:
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welcome to pf!

hi aiika! welcome to pf! :smile:

(try using the X2 icon just above the Reply box :wink:)

Yes, use Lorentz Force …

how much does the qE have to be to cancel out the qvxB so as to produce a zero deflection? :smile:
 
hi there..i tried using this

qE=qvxB

hmmm..am i on the right track?:-p
 
wouldn't qE = -qvxB work better? :wink:
 
oh thanks!

so...

with qE what should i do next?
 
uhh? :confused:

get on with it!​
 

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