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4. Use Lenz's law to determine whether the induced current in the resistor R is from A to B or from B to A in the 4 configurations in Fig. 3. You should label the direction of B , the sign of AD, / Ar, the direction of Band the direction of / in the coil and R for each of the 4 cases. A A A R R. R R B B B IN IN S N (1) (2) (3) (4) S S IN Figure 3 Four configurations