Question

The sequence of coloured bands in two carbon resistors R1 and R2 is (i) brown, green, blue and (ii) orange, black, green Find the ratio of their resistances.

Answer 1

Given : R1 AND R2,

ASKED : RATIO OF R1 : R2

Hope the attached image helps :)

Answer 2

Answer:

The ratio of their resistances is 5:1

Explanation:

Given that,

First carbon resistor = brown,green, blue

Second carbon resistor = Orange, black, green

The value of resistor by colour

First resistor $R_{1}=15\times10^{6}\Omega$

Second resistor $R_{2}=30\times10^{5}\Omega$

We need to calculate the ratio of the resistors

$\dfrac{R_{1}}{R_{2}}=\dfrac{15\times10^{6}}{30\times10^{5}}$

$\dfrac{R_{1}}{R_{2}}=\dfrac{5}{1}$

Hence, The ratio of their resistances is 5:1