A 12-cm -diameter circular loop of wire is placed in a 0.84-T magnetic field. Pa

Question

A 12-cm -diameter circular loop of wire is placed in a 0.84-T magnetic field.

Part A

When the plane of the loop is perpendicular to the field lines, what is the magnetic flux through the loop?

Express your answer to two significant figures and include the appropriate units.

Part B

The plane of the loop is rotated until it makes a 43? angle with the field lines. What is the angle in the equation ?B = BAcos? for this situation?

Express your answer using two significant figures.

Part C

What is the magnetic flux through the loop at this angle?

Express your answer to two significant figures and include the appropriate units.

Explanation / Answer

A) magnetic flux = A*B*cos(0)

= (pi*d^2/4)*B

= (pi*0.12^2/4)*0.84

= 9.5*10^-3 Weber

B) Here we take angle between normal to the loop and magtic filed.

angle between plane and B is 43 degrees

so, angle between normal to tha plane and B is = 90 - 43

= 47 degrees

C)
magnetic flux = A*B*cos(47)

= (pi*d^2/4)*B*cos(47)

= (pi*0.12^2/4)*0.84*cos(47)

= 6.58*10^-3 weber

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