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BITSAT 2013
Exam
BITSAT
Year
2013
Subject
Physics
Chapter
Electromagnetic Induction

BITSAT 2013 · Physics · Electromagnetic Induction

The ratio of secondary and primary turns of step-up transformer is...

The ratio of secondary and primary turns of step-up transformer is 4:1.4: 1. If a current of 4 A is applied to the primary, the induced current in secondary will be

Options

  1. A8A8 \mathrm{ A}
  2. B2A2 \mathrm{ A}
  3. C1A1 \mathrm{ A}
  4. D0.5A0.5 \mathrm{ A}

Correct answer

C. 1A1 \mathrm{ A}

Step-by-step solution

\frac{\mathrm{I}_{\mathrm{S}}}{\mathrm{I}_{\mathrm{P}}}=\frac{\mathrm{N}_{\mathrm{P}}}{\mathrm{N}_{\mathrm{S}}}=\frac{1}{4} \Rightarrow\mathrm{I}S=14×4=1A_{\mathrm{S}}=\frac{1}{4} \times 4=1 \mathrm{ A}
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