A carbon resistor has the following color bands; band 1 is yellow, band 2 is violet, band 3 is black, and band 4 is gold. What is the ohmic value of the resistor, as well as the tolerance? See illustration EL-0103.
• Use the color code chart in the illustration to translate each band to numbers and multiplier • Remember that for a 4‑band resistor: band 1 = first digit, band 2 = second digit, band 3 = multiplier, band 4 = tolerance • Gold and silver bands are usually tolerance, not digit or multiplier, in a 4‑band code
• What two‑digit number do you get from the yellow first band and violet second band, using the table? • Once you have that two‑digit number, how does the black third band (multiplier) change it according to the chart? • Which answer choices match both the computed resistance value and a tolerance band of gold?
• Confirm the digit values for yellow and violet from the table before doing any math • Verify the multiplier value listed for a black band in the multiplier column • Check in the tolerance column what gold corresponds to, and compare that percentage to the answer choices
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