A 1:5 step-up transformer has 120V across the primary and 600 ohms resistance across the secondary. Assuming 100% efficiency, the primary current will be: 

(A) 0.2 Amp. (B) 5 Amps. (C)10 Amps. (D) 20 Amps
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asked May 8, 2018 by anonymous1 | 9 views