Match List - I with List - II.
| List – I Colour | List – II Colour codes of carbon resistor | ||
|---|---|---|---|
| (A) | Blue | (I) | 4 |
| (B) | White | (II) | 5 |
| (C) | Yellow | (III) | 6 |
| (D) | Green | (IV) | 9 |
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → (A)-(III), (B)-(IV), (C)-(I), (D)-(II)
The value of a carbon resistor is read from coloured rings, and each colour stands for a digit from 0 to 9.
(A) Blue — this matches (III) 6.
(B) White — this matches (IV) 9.
(C) Yellow — this matches (I) 4.
(D) Green — this matches (II) 5.
Note: This question is from the pre-rationalised NCERT book (2022-23). The topic was removed from the latest NCERT book (2026-27), and it also appears to be out of the CUET 2026 syllabus.
NCERT (Pre-rationalised edition, 2022-23):
Resistivity of Various Materials – “… Resistors in the higher range are made mostly from carbon. Carbon resistors are compact, inexpensive and thus find extensive use in electronic circuits. Carbon resistors are small in size and hence their values are given using a colour code.”
| Colour | Number | Multiplier | Tolerance (%) |
|---|---|---|---|
| Black | 0 | 1 | |
| Brown | 1 | 101 | |
| Red | 2 | 102 | |
| Orange | 3 | 103 | |
| Yellow | 4 | 104 | |
| Green | 5 | 105 | |
| Blue | 6 | 106 | |
| Violet | 7 | 107 | |
| Gray | 8 | 108 | |
| White | 9 | 109 | |
| Gold | 10-1 | 5 | |
| Silver | 10-2 | 10 | |
| No colour | 20 |