A square coil consisting of 240 turns of wire and having an area of 0.75 m2 is placed perpendicular to a magnetic field of 1.1 T. The coil is flipped until its plane is parallel to the field which produces an electromotive force of 110.6 v. How much time did it take for this to occur? (answer to 3 sig figs please)

Ohm's law tells you that i = v/r where v is equivalent voltage and r is equivalent resistance of the circuit
since all circuits have the same voltage, your question is really asking which circuit has the lowest total resistance, since the lower the resistance, the higher the current
circuit a has a resistance of 5 ohms; circuit c is in series so has a resistance of 10 ohms; circuit b is in parallel and therefore has a resistance of 2.5 ohms (review your notes on adding resistances in parallel and series); therefore b has the highest current