Resistor Color Codes MCQ

Content Curator

Resistor color codes play an important role in designing electronic devices. This article discusses some important choice-based questions on Resistor Color Codes from the Current Electricity concept of the latest CBSE Class 12 Physics Syllabus.

Resistor values are indicated with color codes as defined by the International Standard IEC 60062. The color coding is usually done with four color bands. To know the value of resistors, the calculations based on color code are to be known.

The color bands are printed on the resistors to determine the resistance value. Some interesting features are:

The leaded resistors with a power rating up to 1 W are marked in this way.
Apart from the resistance, the color codes also indicate the tolerance limit and the rate of failure of the resistors.
The exact band number is dependent on the number of bands which varies from 3 to 6 bands.
The first two indicate the resistance and the third is the multiplier.

Resistor Color Codes for 4- band and 5-band Resistor

Resistor Color Codes for 4 - band and 5 - band Resistor

Resistor Color Codes MCQs

Q.1. Resistor Color codes were developed by:

Radio Manufacturers Association (RMA)
International Organization for Standardization (ISO)
Electronics Industries Alliance (EIA)
a & b are correct

Click here for the answer

A.1. The correct option is A. Radio Manufacturers Association (RMA)

Explanation: The resistor color code was invented by the Radio Manufacturers Association (RMA) in the 1920s.

Q.2. Why is Color Coding used for Resistors?

Cylindrical Shape
Small Size
Due to Through Hole Component
A & B are correct

Click here for the answer

A.2. The correct option is D. A & B are correct

Explanation: Electronic components and wires are given color coding to identify their value and function. The color bands help in identifying Components and wires are coded with colors to identify their value and function. These help in identifying resistor resistive values, tolerance percentage, and resistor size indicative of its power rating.

Q.3. The number of color bands used in resistors is _______.

Click here for the answer

A.3. The correct option is B. 6

Explanation: Resistors have color bands divided into three types: 4 band resistor, 5 band resistor, and 6 band resistor.

Q.4. Red color bands on resistors are read from________.

Left to Right
From both sides
Right to Left
All are correct

Click here for the answer

A.4. The correct option is A. Left to Right

Explanation: Resistors do not start with a metallic band on the left. Hence if a resistor has a gold or silver band on one end, there is a resistor tolerance of 5% or 10%. The resistor position on this band is read from left to right.

Read More:

Important Topics from Current Electricity
Ohm’s Law	Cells in Series & Parallel	Resistor Applications
Electrical Circuit	Static Electricity	Cells in Series & Parallel
Carbon Resistor	Kirchoff's Laws	Potentiometer
Cells, EMF & Resistance	Ohm’s Law & its Limitations	Meter Bridge
Voltage Divider Formula	Network Analysis	Resistance and Length Formula
Internal Resistance	Power and Resistance	Current Density Formula

Q.5. What are the first two bands on the resistors?

Tolerance
Decimal Multiplier
Two digits
All are incorrect

Click here for the answer

A.5. The correct option is C. Two digits

Explanation: The first two bands on a resistor are two digits that denote the resistance value in Ohms. In a 3-band or 4-band resistor, the third band is representative of the multiplier.

Q.6. The digit that represents the green band on a resistor is ________.

Click here for the answer

A.6. The correct option is C. 5

Explanation: From the resistor color code table, green is represented by the digit 5.

Q.7. _______ is to be added after the first two digits in a decimal multiplier?

Resistance
Digits
Tolerance
Zeros

Click here for the answer

A.7. The correct option is D. Zeros

Explanation: The first two digits are representative of the resistance values and after that, zeroes are added to the decimal multiplier as given in the resistor code.

Q.8. Zero Ohm resistors are used for __________.

Connect the Tracks
As Jumpers
Increase Machine Production Time
All are correct

Click here for the answer

A.8. The correct option is D. All are correct

Explanation: Zero Ohm resistors are most conveniently used as jumpers, connected with tracks, and also useful in increasing the machine production time.

Also Check Out:

Other Related Articles
Electric Charge	Wheatstone Bridge	Electromotive Force
Galvanometer	Current	Specific Resistance Unit
Ammeter Vs Voltmeter	Resistivity and Temperature	EMF Vs Voltage
Resistance & Length	Power Transformers	Air Conditioning Vs Refrigeration

Q.9. A no band on the resistor means the tolerance is __________.

0.3%
15%
30%
20%

Click here for the answer

A.9. The correct option is D. 20%

Explanation: Tolerance is defined as the percentage error in resistance of the resistor. Thus, a gold tolerance band has a tolerance of 5%, silver has a tolerance of 10% and when there is no band, the tolerance is 20%.

Q.10. The color coding indicates the _______ value or rating of the resistor.

Numerical
Resistance
Alphabetical
a & c are correct

Click here for the answer

A.10. The correct option is A. Numerical

Explanation: Color codes help in identifying the value and function of the electronic components and wires. They also help in identifying the resistive value, percentage tolerance, and wattage rating based on the resistor size.

Q.11. 7 digit is represented by ________ in the resistor color code.

Blue
Violet
Green
Red

Click here for the answer

A.11. The correct option is B. Violet

Explanation: As per the resistor color code, the 7 digit stands for Violet.

Also Check Out:

Important Class 11 and 12 Study Guides
NCERT Solutions for Class 12 Physics	Class 11 Notes	Physics Study Material
Comparison Articles in Physics	Class 12 Physics Book Pdf	CBSE Class 12 Physics Practicals
Important Physics Formulae	Important Physics MCQs	NCERT Solutions Class 11 Physics Book
SI Units in Physics	Important Physics Derivations	Important Physics Constants
Class 12 Physics Notes	NCERT Solutions Class 11 Physics	Current Electricity Important Questions
Class 11 PCMB Syllabus	Class 12 PCMB Textbooks	Class 12 Maths Book Pdf
NCERT Class 12 PCMB Textbook	Class 12 PCMB Notes	NCERT Solutions for Class 12 Chemistry
NCERT Solutions for Class 12 Biology	NCERT Solutions Class 11 English	Class 12 Biology Book Pdf
NCERT Solutions Class 11 Biology	NCERT Solutions for Class 12 Maths	Class 12 English Book Pdf

Resistor Color Codes MCQ

Resistor Color Codes MCQs

CBSE CLASS XII Related Questions

1.
Two thin lenses of focal length \( f_1 \) and \( f_2 \) are placed in contact with each other coaxially. Prove that the focal length \( f \) of the combination is given by \[ f = \frac{f_1 f_2}{f_1 + f_2}. \]

2.
Write any two features of nuclear forces.

3.
Draw the number of scattered particles versus the scattering angle graph for scattering of alpha particles by a thin foil. Write two important conclusions that can be drawn from this plot.

4.
Two small identical metallic balls having charges \( q \) and \( -2q \) are kept far at a separation \( r \). They are brought in contact and then separated at distance \( \frac{r}{2} \). Compared to the initial force \( F \), they will now:

6.
What is displacement current (\( i_d \))? Considering the case of charging of a capacitor, show that \( i_d = \varepsilon_0 \frac{d\Phi_E}{dt} \). What is the value of \( i_d \) for a conductor across which a constant voltage is applied?

Similar Physics Concepts

Comments

SUBSCRIBE TO OUR NEWS LETTER

Resistor Color Codes MCQ

Resistor Color Codes MCQs

CBSE CLASS XII Related Questions

1.Two thin lenses of focal length \( f_1 \) and \( f_2 \) are placed in contact with each other coaxially. Prove that the focal length \( f \) of the combination is given by \[ f = \frac{f_1 f_2}{f_1 + f_2}. \]

2. Write any two features of nuclear forces.

3. Draw the number of scattered particles versus the scattering angle graph for scattering of alpha particles by a thin foil. Write two important conclusions that can be drawn from this plot.

4.Two small identical metallic balls having charges \( q \) and \( -2q \) are kept far at a separation \( r \). They are brought in contact and then separated at distance \( \frac{r}{2} \). Compared to the initial force \( F \), they will now:

6.What is displacement current (\( i_d \))? Considering the case of charging of a capacitor, show that \( i_d = \varepsilon_0 \frac{d\Phi_E}{dt} \). What is the value of \( i_d \) for a conductor across which a constant voltage is applied?

Similar Physics Concepts

Comments

SUBSCRIBE TO OUR NEWS LETTER

1.
Two thin lenses of focal length \( f_1 \) and \( f_2 \) are placed in contact with each other coaxially. Prove that the focal length \( f \) of the combination is given by \[ f = \frac{f_1 f_2}{f_1 + f_2}. \]

2.
Write any two features of nuclear forces.

3.
Draw the number of scattered particles versus the scattering angle graph for scattering of alpha particles by a thin foil. Write two important conclusions that can be drawn from this plot.

4.
Two small identical metallic balls having charges \( q \) and \( -2q \) are kept far at a separation \( r \). They are brought in contact and then separated at distance \( \frac{r}{2} \). Compared to the initial force \( F \), they will now:

6.
What is displacement current (\( i_d \))? Considering the case of charging of a capacitor, show that \( i_d = \varepsilon_0 \frac{d\Phi_E}{dt} \). What is the value of \( i_d \) for a conductor across which a constant voltage is applied?