Question

A carbon resistor has a resistance of 62K ohms with a tolerance of 5% give colour code for these resistance​

Answer 1

Solution:

Given:

=> Resistance = 62 kΩ

                       = 62000 Ω

                       = 62 × 10³ ± 5% Ω

• Red = 2
• Blue = 6
• Orange = 3
• Gold = ±5%

So, colours attached to the numbers are, 6, 2 and 3 and the colour codes are blue, red and orange and ±5% is Gold.

Extra Info:

What is resistance?

• Resistance is a measure of the opposition that a circuit (or an electrical element) offers to the flow of electric current . You might compare it to the diameter of a hose.
• In fact, for metal wire, this is an excellent analogy: small-diameter wire has high resistance (a lot of opposition to current flow), and large-diameter wire has low resistance (not much opposition to electric currents). Resistance is measured in Ohms, Ω.
• R = ρL/A

• Where, ρ is the resistivity of the material of the wire which remains constant for that particular material.

Color sequence for a carbon resistor:

• Black = 0
• Brown = 1
• Red = 2
• Orange = 3
• Yellow = 4
• Green = 5
• Blue = 6
• Violet = 7
• Grey = 8
• White = 9