The non-ideal transformer has three coils each with an identical number of turns. Terminal pair e-f is an open circuit. Leakage flux, coil resistance, and core losses can be neglected. When the two left-hand coils are additively connected in parallel and Vab = 120 V (60 Hz), the input current is 2A. If the lower coil (terminal pair c-d) is disconnected (open circuit) and Vab remains 120 V (60 Hz), the value of input current to the single-coil is ______ (in A)
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