Question

A resistor is marked with colours red, red, orange and gold. Write the value of its resistance.

Answer 1

First band represents the first significant figure of resistor value.

Second band represents the second significant figure of resistor value.

Third band represents the decimal multiplier after the first-two significant figures of resistor value.

Fourth band represents the tolerance of resistor.

According to colour code : red (2) orange (3) gold (5 %).

Thus resistance value is $22\times {10}^3\pm 5$% $\Omega$.