Aresistor is marked with the following color bands: brown, black, red, and silver. what is the resistance of this resistor?

a. 10 b. 100 c. 10,000 d. 1,000

Black means 0
Brown means 1
Red means 2

Silver means the value is accurate within ±10%


The first band is brown which means 1
So write down 1

Then write a decimal point to the right giving 1.

The second digit is black which means 0
So write 0 on the right giving: 1.0

The third band is red which means 2. The third band gives the power of 10 which is therefore 10². Multiply by this giving:
1.0x10²

This is best written as 100. So the resistance is 100 ohm

10% of 100ohms is 10ohms. So the resistance could be 10ohms lower than 100 or 10ohms higher than 100.

So the resisitance is between 90 ohms and 110 ohms.
So I'm guessing it's 100

D. 1000 ohms = 1Kohm; silver is the tolerance band of the resistor. Silver signifies plus or minus 10%.

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