A 7.70 cm diameter wire coil is initially oriented so that its plane is perpendi
ID: 2096059 • Letter: A
Question
A 7.70 cm diameter wire coil is initially oriented so that its plane is perpendicular to a magnetic field of 0.590T pointing up. (Another way of saying this is that the normal to the coil's area is initially parallel to the magnetic field.) During the course of 0.120 s, the field is changed to one of 0.280T pointing down. What is the magnitude of the CHANGE in the magnnetic flux through this loop? (Use SI metric units)I got 4.16*10-3 but it says it's wrong, what am I doing wrong? A 7.70 cm diameter wire coil is initially oriented so that its plane is perpendicular to a magnetic field of 0.590T pointing up. (Another way of saying this is that the normal to the coil's area is initially parallel to the magnetic field.) During the course of 0.120 s, the field is changed to one of 0.280T pointing down. What is the magnitude of the CHANGE in the magnnetic flux through this loop? (Use SI metric units)
I got 4.16*10-3 but it says it's wrong, what am I doing wrong?
Explanation / Answer
change in flux =A(B1- (B2) ) = A(B1+B2) = 3.14*(7.7*10^-2)^2 / 4 *(5.9+0.28) = 4.05*10^-3 weber
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