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JEE Main20199 Jan 2019Morning ShiftPhysicsCurrent ElectricityActual

A resistance is shown in the figure. Its value and tolerance are given respectively by:

Options

  1. A27 k Ω , 10 %
  2. B270 Ω , 5 %
  3. C270 Ω , 10 %
  4. D27 k Ω , 20 %

Correct answer

A. 27 k Ω , 10 %

Step-by-step solution

Colour band A and B indicate the first two significant figures of resistance in "ohm" , while the C band gives the decimal multiplier i.e., the number of zeros that follows the two significant figures A and B . The last band D indicates the tolerance in percentage about the indicate value or in another ward it represents the percentage accuracy of the indicated value. As per color coding of a carbon resistor Color and its values are R e d 2 V i o l e t 7 O r a n g e 3 S i l v e r 10 % ∴     R = 27 &

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