Magnetism: Solving Force Problem with qvB Equation

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An electron moving at 2.0x10^6 m/s in a magnetic field experiences an upward force of 2.3x10^-12 N while traveling southward. The user applies the equation F=qvB to find the magnetic field, rearranging it to B=(qv)/F. However, the calculated value does not yield the expected result, prompting a reevaluation of the formula. A suggestion is made to pay attention to units throughout the calculations to avoid errors. The discussion emphasizes the importance of careful unit management in solving physics problems.
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I am currently working on a problem that states...
An electron experiences the greatest force as it travels 2.0x10^6 m/s in a magnetic field when it is moving southward. The force is upward and of magnitude 2.3x10^-12 N. What is the magnitude and direction of the magnetic field?

I started with the equation F=qvB and came out with B=(qv)/F since I am trying to find the magnitude of the magnetic field. That calculates to
B=((1.6x10^-19)(2x10^6))/(2.3x10^-12) but does not come out to a correct awnser. Is there anything I am doing wrong?
 
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It should be F/qv. To catch mistakes like this, you should use units in your work, or at least keep them in mind.
 
oops, thanks for catching that
 

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