Question 1 of 10
What is the primary function of a resistor?
Resistors are designed to impede the flow of electrons, hence opposing current.
Question 2 of 10
What is the unit of measurement for resistance?
Resistance is measured in Ohms, symbolized by the Greek letter Omega (?).
Question 3 of 10
What is the formula that describes the relationship between Voltage (V), Current (I), and Resistance (R)?
Ohm's Law: Resistance is equal to voltage divided by current (R = V/I).
Question 4 of 10
In the color code for resistors, what does the first band typically represent?
The first band indicates the first digit of the resistor's value.
Question 5 of 10
In the color code, what does the third band represent?
The third band indicates the multiplier.
Question 6 of 10
If a resistor has the color bands: yellow, violet, red, and gold, what is its resistance value (approximately)?
Yellow (4), Violet (7), Red (x100), Gold (5% tolerance) -> 47 * 100 = 4700 Ohms, or 4.7 k?
Question 7 of 10
What does the fourth color band on a resistor indicate?
The fourth band indicates the tolerance, showing the possible variation in the resistor's value.
Question 8 of 10
Which of these is NOT a typical resistor value?
Resistors are manufactured in preferred values; 455 Ohms is less common.
Question 9 of 10
What color represents the digit '0' in the resistor color code?
Black represents the digit zero in the color code.
Question 10 of 10
A resistor's tolerance is best described as...
Tolerance indicates the permissible deviation of the actual resistance from the stated value.
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