A rectangular box is placed in a region where there is a uniform magnetic field
ID: 2034825 • Letter: A
Question
A rectangular box is placed in a region where there is a uniform magnetic field of magnitude 0.0340 T directed to the right. In the diagram, the field lines are represented by the blue arrows. Here cg = 36.0 cm, ab = 10.0 cm, and bc = 12.0 cm.
Determine the magnetic flux, including the sign, through each of the six faces of the box.
?abcd = 0 Wb Correct: Your answer is correct.
?bcgf = 4.90e-4 Wb Incorrect: Your answer is incorrect. What is the area of this surface? What is the angle between the normal to the surface and the magnetic field lines? Did you consider the sign of the flux?
?efgh = 0 Wb Correct: Your answer is correct.
?adhe = 1.5e-3 Wb Incorrect: Your answer is incorrect. What is the area of this surface? What is the angle between the normal to the surface and the magnetic field lines? Did you consider the sign of the flux?
?abfe = 0 Wb Correct: Your answer is correct.
?cdhg = 0 Wb Correct: Your answer is correct.
I keep getting bcgf and adhe wrong! What am I doing wrong??? Please show me a detailed explaination of how to do this, thank you!
Explanation / Answer
Solution:
?bcgf = B * A ( As angle between normal and magnetic field is zero)
=> ?bcgf = 0.034 * cg * bc
=> ?bcgf = 0.034 * 0.12 * 0.36
=> ?bcgf = 0.0014688 Wb
?adhe = -0.0014688 Wb ( as the angle between normal and magnetic field will be pi)
please comment for Queries. (Significant figures is not mentioned so i am leaving the answer as calculated)