A rectangular loop of wire is moving toward the bottom of the page with a speed

Question

A rectangular loop of wire is moving toward the bottom of the page with a speed of 0.021 m/s (see the drawing). The loop is leaving a region in which a 3.0 T magnetic field exists; the magnetic field outside this region is zero. During a time of 3.0 s, what is the magnitude of the change in the magnetic flux?
Wb

A rectangular loop of wire is moving toward the bottom of the page with a speed of 0.021 m/s (see the drawing). The loop is leaving a region in which a 3.0 T magnetic field exists; the magnetic field outside this region is zero. During a time of 3.0 s, what is the magnitude of the change in the magnetic flux?

Explanation / Answer

h-=V(dt) =0.021*3=0.063 m

Area

A =hW=0.0631*0.08

A=5.04*10^-3 m^2

flux

d(phi)=BA =3*5.04*10^-3 =0.01512 Wb

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