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Question: Answered & Verified by Expert
A carbon resistance has a following colour code. What is the value of the resistance?

PhysicsCurrent ElectricityJEE MainJEE Main 2019 (09 Jan Shift 2)
Options:
  • A 6.4 MΩ±5%
  • B 64 kΩ±10%
  • C 530 kΩ±5%
  • D 5.3 MΩ±5%
Solution:
1422 Upvotes Verified Answer
The correct answer is: 530 kΩ±5%

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 word, it represents the percentage accuracy of the indicated value. 

 

According to given color-coding, the values of the color of rings are 

Green 5
Orange 3
Yellow 4
Gold 5%
   


Value of resistance =53×104Ω

=530 kΩ

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