(9%) Problem 4: A wire carrying a 25 A current passes between the poles of a str

Question

(9%) Problem 4: A wire carrying a 25 A current passes between the poles of a strong magnet so that it is perpendicular to the field and experiences a 2.12 N force on the 4.75 cm of wire in the field what is the average field strength (T)? Grade Summary Deductions Potential 0% 100% cosO) Submissions Attempts remaining:5 sin) tan() acosO sinh) cotan)asin() acotan % per attempt) detailed view atan)a cosh0 tanh cotanhO Degrees Radians 0 Submit Hint I give up! Hints:-deduction per hint. Hints remaining: 3 Feedback: deduction per feedback.

Explanation / Answer

4)

Here:

I = 25 A

F = 2.12 N

L = 4.75 cm = 0.0475 m

Use:

F = B*I*L

put values:

2.12 = B*25*0.0475

B = 1.79 N

Answer: 1.79 N

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