Table of Contents
If we comb our hair on a dry day and bring the comb near small pieces of paper, the comb attracts the pieces, why?
Answer: This is an example of frictional electricity and induction. When we comb our hair, it gets positively charged by rubbing. When the comb is brought near the pieces of paper some of the electrons accumulate at the edge of the paper piece which is closer to the comb. At the farther end of the piece there is deficiency of electrons and hence, positive charge appears there. Such a redistribution of charge in a material, due to presence of a nearby charged body is called induction. The comb exerts larger attraction on the negative charges of the paper piece as compared to the repulsion on the positive charge. This is because the negative charges are closer to the comb. Hence, there is a net attraction between the comb and the paper piece.
You may also like
-
Conceptual Questions Based on Class 12 Physics Ray Optics
Last modified on:3 years agoReading Time:14MinutesConceptual Questions Based on Class 12 Physics Ray Optics Here we are providing conceptual questions based on class 12 physics chapter 9 Ray Optics. These questions are prepared by experts and are very useful from exam point of view. Students can practice these questions for scoring better marks in the exam.…
-
Conceptual Questions Based on Class 12 Physics Electromagnetic Waves
Last modified on:4 years agoReading Time:7MinutesHere we are providing conceptual questions based on class 12 physics chapter 8 electromagnetic waves. These questions are prepared by experts and are very useful from exam point of view. Students can practice these questions for scoring better marks in the exam. Conceptual Questions Based on Class 12 Physics Electromagnetic Waves…
-
Conceptual Questions Based on Class 12 Physics Magnetism and Matter
Last modified on:4 years agoReading Time:7MinutesConceptual Questions Based on Class 12 Physics Magnetism and Matter Q.1. Does a magnetic monopole exist? Justify your answer. How magnetic field is produced? Solution. No, a magnetic monopole does not exist. The reason is that a magnetic field is produced by a current loop and not by monopole of a…
