Resistor Colour Code

The colour code on a carbon resistor encodes its value: the first two bands give significant figures, the third band is a power-of-ten multiplier, and the fourth band gives tolerance, following the standard sequence where yellow = 4, violet = 7, orange = 3 (multiplier (10^3)), and gold = (\pm)5%. Reading the bands, the significant figures are 4 and 7, forming 47, and the multiplier (10^3) scales this to (47 \times 10^3 = 47,000;\Omega = 47) k(\Omega), with a tolerance of (\pm)5%. The option 47 k(\Omega) (\pm)10% wrongly reads the gold band as silver. The option 4.7 k(\Omega) (\pm)5% uses a multiplier of (10^2), misreading orange. The option 470 k(\Omega) (\pm)5% overstates the multiplier as (10^4). This follows the NCERT carbon-resistor colour-code convention. A plausibility check confirms the reading: orange firmly denotes (10^3), so a 47 base value must land at 47 k(\Omega), and the gold band reliably fixes the tolerance at (\pm)5%.