How can I troubleshoot and verify my calculations for magnetic force?

In summary, the conversation discusses a student getting a wrong answer for part b of a problem, while parts a and c are correct. The student is asked to show their work, and it is suggested to check the numbers and ask for help from the person who assigned the problem. The conversation ends with the student sharing an image of their work and asking for clarification.
  • #1
kevinm829
3
0
Homework Statement
A wire 48.3 cm long carries a 0.710 A current in the positive direction of an x-axis through a magnetic field with an x component of zero, a y component of 0.000410 T, and a z component of 0.00850 T. Find the (a) x, (b) y, and (c) z components of the magnetic force on the wire.
Relevant Equations
Force on a wire: F=i*(crossP(L,B))
I am getting a wrong answer for part b, however part a and c both are correct :
a. 0 N
b = -2.91E-3 N (WRONG)
c. 1.4E-4 N
 
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  • #2
Please show your work. We cannot help you unless you do.
 
  • #3
kuruman said:
Please show your work. We cannot help you unless you do.
IMG_3756.jpg
 
  • #4
kuruman said:
Please show your work. We cannot help you unless you do.
The image i included shows you the work done. please let me know if u need more
 
  • #5
I get the same answer as you. If this is a machine-graded problem, show your solution to whomever assigned it to you an ask about it. But before you do that, check the numbers again and make sure you copied everything correctly from the textbook.
 

FAQ: How can I troubleshoot and verify my calculations for magnetic force?

How can I ensure my calculations for magnetic force are accurate?

To ensure your calculations for magnetic force are accurate, double-check the fundamental equations you're using, such as the Lorentz force law: F = q(v x B) for a charged particle, or F = I(L x B) for a current-carrying wire. Verify the units of each variable and ensure they are consistent. Additionally, consider using simulation software to cross-verify your results.

What common mistakes should I look out for when calculating magnetic force?

Common mistakes include incorrect unit conversions, sign errors, misunderstanding vector directions, and neglecting the right-hand rule for cross products. Ensure you carefully follow vector operations and confirm that all physical constants and measurements are accurate.

How can I verify my magnetic force calculations experimentally?

You can verify your magnetic force calculations experimentally by setting up a controlled environment where you can measure the force directly. For instance, use a known current in a wire placed within a magnetic field and measure the resulting force with a force sensor. Compare these measurements with your theoretical calculations to check for consistency.

What tools or software can help in troubleshooting magnetic force calculations?

Several tools and software can assist in troubleshooting magnetic force calculations, such as MATLAB, COMSOL Multiphysics, and ANSYS. These platforms offer simulation environments where you can model magnetic fields and forces, providing a visual and numerical way to verify your calculations.

How do I account for external factors that might affect my magnetic force calculations?

External factors such as temperature, material properties, and nearby magnetic fields can affect your calculations. Ensure you account for these by including relevant corrections or adjustments in your models. For instance, consider the temperature dependence of material permeability or the influence of nearby ferromagnetic materials that might distort the magnetic field.

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