A circuit is composed of a coil having N turns and area A. Its leads are connected to a combination of resistors, as shown in (Figure 1). All three resistors have the same resistance R. The coil is placed in a perpendicular magnetic field B0, and then the field is uniformly reduced to zero over a time period ?. During the period in which the field is being ramped down, the magnitude of the potential difference across the resistor R3 is measured to be V.

\f\fBo RIR1 R3 RZ