Calculating Magnetic Field Strength for Parallel-Plate Capacitor

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Homework Help Overview

The discussion revolves around calculating the magnetic field strength associated with a parallel-plate capacitor, specifically focusing on the effects of an increasing electric field between the plates. The problem involves parameters such as the capacitor's dimensions and the rate of change of the electric field.

Discussion Character

  • Exploratory, Assumption checking, Mathematical reasoning

Approaches and Questions Raised

  • Participants discuss the need to convert the rate of change of the electric field into charge per second, questioning how to perform this conversion. There is also mention of considering the charge of an electron in the calculations.

Discussion Status

Some participants have provided insights into unit conversion and the relevance of charge, while others have shared specific numerical results. Multiple interpretations of the problem are being explored, particularly regarding the calculations for different distances from the axis.

Contextual Notes

There is an emphasis on ensuring correct unit conversions and understanding the relationship between electric and magnetic fields in the context of the problem. The original poster's calculations appear to be challenged by the need for additional considerations regarding charge and its implications.

spacemanrussell
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Homework Statement


A 10-cm-diameter parallel-plate capacitor has a 1.0 mm spacing. The electric field between the plates is increasing at the rate 1*10^6V/m/s.

What is the magnetic field strength 3.0 cm from the axis?



Homework Equations


B= uo/(2*pi) *r/R^2*(Chang in Q/ change in time)


The Attempt at a Solution



I keep getting 2.4
 
Physics news on Phys.org
I think you need to change the unites for the increase rate to C/s.
anyone knows how?
 
Oh good thinking- I probably need to accound for the charge of an electron.
 
I got the answer from masteringphysics.com 1.67*10^-13 T.
Now what is the magnetic field strength 7cm from the axis?
 

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