1. A very large loop of metal wire with radius 1meter is driven with a linearly increasing current at a rate of 200amps/second . A very small metal wire loop with radius 5centimeter is positioned a small distance away with its center on the same axis (the loops are coaxial). The small loop experiences an induced emf of 983nV . What is the separation of the loops in meters 2. Relevant equations 3. I tried to use Biot-Savart law to find the produced B but it is not right because of the increasing current, Could you explain me the equations to use? Thanks.