Question

A 200Ω resistor has a certain color code. If one replaces the red color with green in the code, the new resistance will be ______.

Options

• 100Ω

• 400Ω

• 300Ω

• 500Ω

Answer 1

A 200Ω resistor has a certain color code. If one replaces the red color with green in the code, the new resistance will be 500Ω.

Explanation:

Given: R = 200Ω

To find: If the colour red is changed to green in the resistance R' colour code, the resistance will now have a new value.

For R = 200 = 20 × 10¹Ω, The resistor will have the colour codes 2 = Red, 0 = Black, and 10¹ = Brown.

The new colour scheme is green, black, and brown.

Green = 5, Black = 0, Brown = 10¹

The new colour scheme will be as follows:

R' = 50 × 10¹ = 500Ω