In a step-up transformer, the turn ratio is $1:10$. A resistance of $200 \, \Omega$ connected across the secondary is drawing a current of $0.5 \, A$. What is the primary voltage and current?

  • A
    $50 \, V, 1 \, A$
  • B
    $10 \, V, 5 \, A$
  • C
    $25 \, V, 4 \, A$
  • D
    $20 \, V, 2 \, A$

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