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Current Electricity
Question
Wired Faculty App

A carbon resistor is marked in coloured bands in the sequence blue, green, orange and gold. What is the resistance and tolerance value of resistance?

Answer

The resistance can be calculated as per the color code of the respective bands.
Blue - 6
Green- 5 
Orange - 3 
The first two bands gives us the significant numbers and the third band gives us the decimal multiplier.
Therefore, 
Resistance, R = 65 x 103 Ω ± 5%.

where, 5% is the tolerance of gold. 

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Some More Questions From Current Electricity Chapter

What conclusion can you draw from the following observations on a resistor made of alloy manganin?

Current A

Voltage V

Current A

Voltage V

0.2

0.4

0.6

0.8

1.0

2.0

3.94

7.87

11.8

15.7

19.7

39.4

3.0

4.0

5.0

6.0

7.0

8.0

59.2

78.8

98.6

118.5

138.2

158.0