..ooo Sprint 10:46 AM session.masteringphysics.com Problem 21.07 MasteringPhysic

Question

..ooo Sprint 10:46 AM session.masteringphysics.com Problem 21.07 MasteringPhysics Problem 21.07 A 18-cm-diameter circular loop of wire is placed in a 0.57-T magnetic field Part A When the plane of lines, what is the magnetic flux through the loop? Express your answer to two significant figures and include the appropriate units. the loop is perpendicular to the field = Value Units Submit Give Up Part B The plane of the loop is rotated until it makes a 4angle with the field lines. What is the angle in the equation = BA cos for this situation? Express your answer using two significant figures. Submit Give Up

Explanation / Answer

A.
A = area = pi r^2

magnetic flux = B.A = 0.57 x (pi x 0.09^2) = 0.0145 Wb

B. flux = B.A (dot product)

   = |B| |A| cos@

where @ is the angle between A and B vector.

A vector is perpendicular to the plane of surafce.

so @ = 90 - 41 = 49 deg

C.
flux = BAcos@ = 0.0145 cos49 = 9.51 x 10^-3 Wb

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