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The value of the series resistor required to convert the above galvanometer into a voltmeter...

Physics
JAMB 1982

The value of the series resistor required to convert the above galvanometer into a voltmeter with a full range deflection of 15V is

  • A. 985 ohms
  • B. 990 ohms
  • C. 995 ohms
  • D. 1000 ohms
  • E. 1005 ohms
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Correct Answer: Option C
Explanation

The value of the resistor R = \(\frac{V_{fs}}{I_s}\) - R\(_g\)

R = \(\frac{15}{0.015}\) - 5

R = 1000 - 5 = 995\(\Omega\)

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