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AP EAMCET2011PhysicsCurrent Electricity

In the circuit shown below, the ammeter reading is zero. Then the value of the resistance R is

Options

  1. A50
  2. B100
  3. C200
  4. D400

Correct answer

B. 100

Step-by-step solution

Given, circuit In loop (1) 12-500 i₁-R i₁=0 In loop (2) 12-500 i₁-2=0 10=500 i₁ From Eqs. (i) and (ii) gathered 12 1 i₁ =(500+R) 12 50=500+R R=100 gathered

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