What would be the ohmic value of a carbon resistor if the color bands 1, 2, 3, and 4 were yellow, green, orange, and gold respectively. See illustration EL-0103.
• Resistor color code for the 1st digit, 2nd digit, multiplier, and tolerance bands • How to convert the first two color bands into a two-digit number, then apply the power-of-10 multiplier from the third band • How the gold tolerance band (±5%) changes the minimum and maximum resistance values
• Look up what numeric values yellow and green represent as the first and second digits, then combine them into a single base value before using the multiplier • Determine what numeric factor the orange band represents (think: how many zeros are added), then multiply it by the two-digit base value to get the nominal resistance • Once you have the nominal resistance, calculate 5% above and 5% below that value to find the allowed range
• Verify the first two bands are read as digits, not multipliers • Confirm the orange band is used as the multiplier (number of zeros or 10 to a power) • Use 5% of your nominal resistance to find the upper and lower limits, then compare that range carefully with the answer choices
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