Question

Red,orange,black are the color bands on resistors.Find its resistance?

• A. $23\Omega \pm 20$ %
• B. $25\Omega \pm 10$ %
• C. $32\Omega \pm 20$ %
• D. $53\Omega \pm 15$ %

Answer 1

The correct option is A $23\Omega \pm 20$ %

For first two significant digits of resistance , we see the first two colours .

And, third color signifies the multiplier.

Here, red color means digit $2$ and orange color means $3$.

And for multiplier, black colour means multiplier of $1$.

Hence resistance is $(23\times 1)=23\Omega$

Since , nothing is said about fourth color, we can check answer from the calculated resistance.

Answer-(A)