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26 Nov 2019

I had a question from my lab called EQUIPOTENTIALCURVES AND LINESOF FORCE
The question is:
In what region of space does your data suggest themagnitude of theelectric field is greatest? Why?

Here is the lab lay out:
http://spiff.rit.edu/classes/phys273/manual/equipot.html

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Related textbook solutions

Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922

Related questions

From my lab EQUIPOTENTIAL CURVES AND LINES OF FORCE I had aquestionon number 1:

  1. Electric field lines have a directional arrow associatedwiththem. Why do the equipotential curves have no directionassociatedwith them?
Here is the lab layout.

http://spiff.rit.edu/classes/phys273/manual/equipot.html


A particle of mass 0.000113 g and charge
71 mC moves in a region of space where the
electric field is uniform and is 3.9 N/C in the
x direction and zero in the y and z direction.
If the initial velocity of the particle is given
by vy = 2.9 × 10^5 m/s, vx = vz = 0, what is
the speed of the particle at 0.3 s?
Answer in units of m/s.

So far I had used A=Q/M to determine acceleration .017 C/1.13x10^-7KG , then plugged that into Vf=Vo+at Vf=2.9x10^5 m/s + Ax(.3)s ...Ikeep getting the wrong answer, does it have something to do withneeding an x and y componant to the velocity and acceleration?please help me figure this out

I am studying for a physics exam next Monday and I need tounderstand this concept a hell of lot better than I do. Hopefullysomeone on here can dumb it down for me.

My textbook says the following:

1. If the probe charge q is positive, the electric fieldvector points in the same direction as the force on the charge; ifnegative, the electric field vector points opposite theforce.

What is this really saying? I don't understand.

2. For the equation, Electric field = K|q|/r^2 , theelectric field is going away from q if q>0, and the electricfield is going toward q if q<0.

I don't understand this either. Is the electric field going awayfrom q because the electric field is negative and q is positive,thus q is attracted to the field? If q is negative then the fieldis going to be going toward q because it's being repelled from thenegative field?

I just want tounderstand the two bolded concepts above and how they relate toeach other, if they in fact do. My job does a horrible job atexplaining it.

Thanks.


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