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BITSAT 2009
Exam
BITSAT
Year
2009
Subject
Physics
Chapter
Alternating Current

BITSAT 2009 · Physics · Alternating Current

The instantaneous current from an a.c. source is I=6 314 t . What...

The instantaneous current from an a.c. source is I=6sin⁡314t\mathrm{I}=6 \sin 314 \mathrm{t}. What is the rms value of the current?

Options

  1. A32amp3 \sqrt{2} \mathrm{amp}
  2. B222 \sqrt{2} amp
  3. C2amp\sqrt{2} \mathrm{amp}
  4. D2amp2 \mathrm{amp}

Correct answer

A. 32amp3 \sqrt{2} \mathrm{amp}

Step-by-step solution

\mathrm{I}_{\mathrm{rms}}=\frac{\mathrm{I}_{0}}{\sqrt{2}}=\frac{6}{\sqrt{2}}=3 \sqrt{2} \mathrm{amp}.
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