I cannot figure out the Emf. I know it involves thedx/dt. And you plug this into the equation for the magneticfield somehow. just confused on how?
Figure 30-50 shows two parallel loops of wire having a commonaxis. The smaller loop (radius r = 1.9 cm) is above thelarger loop (radius R = 7.4 cm) by a distance x =0.87 m. Consequently, the magnetic field due to thecounterclockwise current i = 10 A in the larger loop isnearly constant throughout the smaller loop. Suppose thatx is increasing at the constant ratedx/dt = v = 0.10 m/s.(a) Determine the magnetic flux through the areaof the smaller loop. (b) Find the emf induced inthe smaller loop.


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