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A resistor has no fourth band. This indicates that the resistor tolerance is:

A. 5%
B. 10%
C. 15%
D. 20%

Sagot :

When a resistor has no fourth band, it indicates its tolerance value. The standard color code system for resistors uses the fourth band to denote the tolerance of the resistor. If there is no fourth band, this lack of a color band signifies a specific default tolerance.

For this particular resistor with no fourth band, the tolerance is 20%.

Therefore, the correct answer is:
d. 20%