Question

Std - Physics - Volume-1
ALUATION
us
A carbon resistor of (47 4.7 ) k 1 to be
marked with rings of different colours for its
identification. The colour code sequence will
be
(a) Yellow - Green - Violet - Gold
(b) Yellow - Violet - Orange - Silver
(c) Violet - Yellow - Orange - Silver
(d) Green - Orange - Violet - Gold
​

Answer 1

(b) yellow violet orange silver

colour code for carbon resistor

0. for black

1. for brown

2. for red

3. for orange

4 .for yellow

5. for green

6.for blue

7.for violet

8.for grey

9.for white

tolerance :-

±5%gold

±10%silver

±20%no colour

(47±4.7)k ohm =47×10³ ± 10%

therefore , b option is correct

Answer 2

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