Question

A carbon resistance reads Red - Red - Black. What is its resistance?

Answer 1

Calculating the value of resistance:

Value for the first colour red $=2$.

Value for the second colour red $=2$.

The multiplier for black is ${10}^{\mathrm{o}}$.

Resistance = $22\times {10}^0=22\mathrm{\Omega }$.

Therefore,the resistance of carbon which reads Red-Red-Black is $22\mathrm{\Omega }$.