Which of the following colors represents the first band on a resistor with a value of 620k ohms?

Prepare for the TSA Electrical Applications Test. Utilize flashcards and understand multiple-choice questions with guidance and explanations. Ensure success on your exam!

To determine the color that represents the first band on a resistor with a value of 620k ohms, it's essential to understand how resistor color coding works. The first two bands indicate significant digits, while the third band represents the multiplier.

In this case, the value of 620k ohms can be broken down into the digits "6", "2", and a multiplier of "3" (which implies multiplying by 10^3 to reach 620,000 ohms). The color that corresponds to the digit "6" is blue, while "2" would correspond to red.

Therefore, the correct choice for the first band on a 620k ohm resistor is blue, which represents the significant digit "6". The correct sequence for this resistor's color bands would therefore start with blue, followed by red for the "2", and then a color indicative of a multiplier of 10^3 (which would be orange).

Understanding the color coding system is crucial for properly identifying and reading resistors, which is a fundamental skill in electrical applications.

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