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NTA Abhyas JEE Main2020PhysicsCurrent ElectricityPractice

A 200  Ω resistance has a certain colour code as per standard colour coding. If one replaces the red colour by green in the code, the new resistance will be

Options

  1. A500   Ω
  2. B400   Ω
  3. C300   Ω
  4. D100   Ω

Correct answer

A. 500   Ω

Step-by-step solution

When red is replaced by green, then the first significant figure in the value of resistance changes from 2 to 5. So the new resistance is 500   Ω

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