14 Colour Coding of Carbon Resistor | Current Electricity Class 12 | JEE Mains & Advanced

🎓 Watch Complete YouTube Lectures Distraction-Free Download the Competishun App 👉 https://play.google.com/store/apps/de... 🌐 Login for Courses & Test Series: 👉 https://i.competishun.com/ Popular Courses for IIT-JEE: Pratham | Prakhar | Prakhar Integrated I | Praveen | Pragyaan C3 | Champ | CATS | ABC | PYQ Express UTS | ATS 👉 Explore all: https://competishun.com/courses/ 📞 Support: 8888-0000-21 | 7410-900-901 | 7410-900-908v --------------- Topics covered in this Current Electricity Class 12 lecture by ABJ sir IITD with timestamp: 00:00 - 01:20 Importance of the topic wrt JEE Main (Specific): Colour coding is important for JEE Mains & Board. In the last few years, the question for this topic has been asked many times in JEE Mains Question paper. This topic is relatively easy and scoring, so ABJ sir is taking a 15 min lecture on this topic. 01:20 - 02:14 Carbon Resistors: Carbon resistors are one of the most common types of electronics used. They are made from a solid cylindrical resistor element with embedded wire leads or metal end caps. Carbon resistors come in different physical sizes with power dissipation limits, commonly from 1 watt down to 1/8 watt. 02:14 - 02:42 Reason for color coding on Carbon resistor: Carbon resistors are commercially used passive devices because they offer very high resistance and compact size. The colors are used to code carbon resistors mainly because it is tough in the small electronic circuit to calibrate the resistance of the tiny bunch of carbon resistors. For simplicity's sake, we are using colors for the coding purpose. 02:42 - 03:40 Representation by Colour Coding: The number of bands in a resistor varies from three to six. The first two bands indicate the resistance value, and the third band is a multiplier. And Fourth one is for tolerance/error. 03:40 - 05:50 Table of Colour coding: ABJ sir explains each color's code with a table's help. We must remember all colors and their codes; solving a problem related to color coding is essential. 05:50 - 07:50 How to solve resistor with the help of table: ABJ sir explains the method of solving. To read them, hold the resistor such that the tolerance band is on your right. The tolerance band is usually gold or silver in color and is placed a little further away from the other bands. Starting from your left, note down all the colors of the bands and write them down in sequence. Next, could you use the table below to see which digits they represent? The band just next to the tolerance band is the multiplier band. 07:50 - 09:44 Example 1 (Color Coding of Carbon Resistor): In this example, there is a carbon resistor with rings of Brown, Blue, Orange, and silver, respectively. We have to find the value of the resistor for this carbon resistor. ABJ sir solved this example using the table. 09:44 - 11:50 Example 2 (Color Coding of Carbon Resistor): In this example, there is a carbon resistor with a ring of Red, Violet, yellow, and gold, respectively. We have to find the value of the resistor for this carbon resistor. ABJ sir solved this example using the table. 12:11 - 14:24 Trick to learn Color coding: In the end of this short lecture, ABJ sir also gave a short trick to learn this color coding. Trick - " BB ROY has Great Beautiful Very Good Wife". In this trick only capital letters shows required colors. B - Black , B - Brown , R - Red , O - Orange , Y - Yellow , G - Green , B - Blue , V - Violet , G - Grey , and W - White. ---------------------------