Question

Two resistances $A$ and $B$ have colour codes orange, blue, white and brown, red, green respectively. Then ratio of their resistances $A : B$ is

• A. 3:01
• B. 1:03
• C. $1 : 3 \times 10^4$
• D. $3 \times 10^4 : 1$

Answer 1

Answer: (D)

$3 \times 10^4 : 1$

Answer 2

Resistance $A = 36 \times 10^9 \,\Omega$
Resistance $B = 12 \times 10^5 \, \Omega$
$\therefore \:\:\: \frac{A}{B} = \frac{36 \times 10^9}{12 \times 10^5} = 3 \times 10^4$
$A : B = 3 \times 10^4$