Question

Question 4 What is the smallest possible value of this resistor? ohms.

Answer 1

For a resistor first two colours gives the significant figures

third colour gives multiplier

fourth colour gives tolerence

The colour code of the resistor is

Red,Red,,Orange

Red

Signficant figure = 2

Multiplier = 10²

Orange

Signficant figure = 3

Multiplier = 10³

Resistance

Red Red Orange

2 2 10³

So resisitance = 22*10³ $\Omega$

Resistance = 22 K$\Omega$

No colour for tolerance, that is tolerance is 20% less or more than the calculated value

Smallest value of Resistance

R = 22 K$\Omega$ - (22 K$\Omega$*(20/100))

R = 22 K$\Omega$ - 4.4 K$\Omega$

R = 17.6 K$\Omega$

Result

Smallest value of the resistor

R = 17.6 K$\Omega$