What should be the diameter of a circular wire loop if it is to have a magnetic

Question

What should be the diameter of a circular wire loop if it is to have a magnetic field of 0.15 T oriented perpendicular to its area which produces a magnetic flux of 12 Times 10^-2 T . m^2? A circular loop with an area of 0.015 m^2 is in a uniform magnetic field of 0.30 T. What is the flux through the loop's plane if it is parallel to the field, at an angle of 37 degree to the field, and perpendicular to the field? A circular loop (radius of 20 cm) is in a uniform magnetic field of 0.15 T. What angle(s) between the normal to the plane of the loop and the field would result in a flux with a magnitude of 1.4 Times 10^-2 T . m^2? The plane of a conductive loop with an area of 0.020 m^2 is perpendicular to a uniform magnetic field of 0.30 T. If the field drops to zero in 0.0045 s, what is the magnitude of the average emf induced in the loop? An ideal solenoid with a current of 1.5 A has a radius

Explanation / Answer

magnetic flux = BAcos(theta)

B = magnetic field strength

A = area

theta = angle b/w B and A vector

a)

parellel means 0 angle b/w A and B

flux = BA = 0.3*(0.015)

=0.0045 Tm2

b)

BAcos(37)

0.00359385979 Tm2

c ) perpendicular

flux = 0

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