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COMEDK2020PhysicsMathematics in Physics

If voltage V=(200 8) V and current I=(20 05) A , then the percentage error in resistance R is

Options

  1. A5.2 %
  2. B25 %
  3. C3 %
  4. D6.5 %

Correct answer

D. 6.5 %

Step-by-step solution

Voltage, V= 200 8) V Current, I=(20 05) A Fesistance, R= V I = 200 20 =10 Taking maximum error condition, aligned R R &= V V + l l = 8 200 + 05 20 = 13 200 R R 100 &= 13 200 100 &= 13 2 =6.5 % aligned

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