Find the resistance value of the carbon resistors shown below.
$(a)$ Red,Red,Red,Silver
$(b)$ Yellow,Violet,Brown,Golden

Vedclass pdf generator app on play store
Vedclass iOS app on app store
(N/A) The resistance of a carbon resistor is determined by its color code: $R = (AB \times 10^C \pm D\%) \Omega$,where $A$ and $B$ are the first two significant figures,$C$ is the multiplier,and $D$ is the tolerance.
$(a)$ Colors: Red,Red,Red,Silver
- Significant figures: Red = $2$,Red = $2$
- Multiplier: Red = $10^2$
- Tolerance: Silver = $\pm 10\%$
- Resistance: $R = (22 \times 10^2 \pm 10\%) \Omega = (2200 \pm 10\%) \Omega$
$(b)$ Colors: Yellow,Violet,Brown,Golden
- Significant figures: Yellow = $4$,Violet = $7$
- Multiplier: Brown = $10^1$
- Tolerance: Golden = $\pm 5\%$
- Resistance: $R = (47 \times 10^1 \pm 5\%) \Omega = (470 \pm 5\%) \Omega$

Explore More

Similar Questions

$A$ carbon film resistor has colour code Green,Black,Violet,Gold. The value of the resistor is

The resistance of a carbon resistor is $4.7 k \Omega \pm 5 \%$. The colour of the third band is

If the last band on the carbon resistor is absent,then the tolerance is (in $\%$)

Which materials are used to prepare wire-bound resistors?

$A$ $200\,\Omega$ resistor has a certain color code. If one replaces the red color by green in the code,the new resistance will be .............. $\Omega$.

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial
For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free
For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo