Q. A carbon film resistor has colour code Green Black Violet Gold. The value of the resistor is

 2190  220 KCETKCET 2014Current Electricity Report Error

Solution:

Corresponding to the colours of the first and second bands green and black, the figures are 5 and 0 .
Corresponding to the colour of third band, violet, the multiplier is . Therefore, the value of the resistance is . The Gold colour of the fourth band, indicates the tolerance of
So, the value of the resistor is written as