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24. The strength of a circular magnetic field decreases with
increasing radius as shown.
a. What is S²B.ds?
Explain or show your work.
b. What is B-ds'?
c. What is B-ds?
1
8T
6 T
Explain or show your work.
d. Combining your answers to parts a to c, what is B-ds?
Explain or show your work.
-1 cm
4 T
2T
4

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1. A wire carrying a 40-A current passes between the poles of a strong magnet that is perpendicular to its field and experiences a 2.42-N force on the 4.3 cm of wire in the field. What is the average magnetic field strength? Things to Prepare: 1. Draw a sketch of the scenario in your notebook. Draw a vector respresenting the average magnetic field generated by the strong magnet. As no other information is given, the vector can be drawn in any diretion. Draw the current-carrying wire with respect to the field vector drawn above, making sure that it is perpendicular to the field. B= T
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