Table of Contents
Charging of Insulators
Since charge cannot flow through insulators, neither conduction nor induction can be used to charge, insulators, so in order to charge an insulator friction is used. Whenever an insulator is rubbed against a body exchange of electrons takes place between the two. This results in appearance of equal and opposite charges on the insulator and the other body. Thus the insulator is charged.
For example rubbing of plastic with fur, silk with glass causes charging of these things.
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Case Study Questions for Class 12 Biology Chapter 15 Biodiversity and Conservation
Last modified on:5 years agoReading Time:4MinutesCase Study Questions for Class 12 Biology Chapter 15 Biodiversity and Conservation Question 1: Within a region, species richness increases with increasing explored area, but only upto a limit. The given graph explains this relationship. (i) What does the given figure show?(a) Rivet-popper hypothesis(b) Species-area relationship(c) Proportionate number of species of…
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Case Study Questions for Class 12 Biology Chapter 13 Organisms and Populations
Last modified on:5 years agoReading Time:4MinutesCase Study Questions for Class 12 Biology Chapter 13 Organisms and Populations Question 1: Organism P has thick lips and tongue so that it can easily feed on the commonly available spiny plants. Organism Q has thick layer of insulating fat under the skin. It was strong hooves to walk steadily…
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Case Study Questions for Class 12 Biology Chapter 12 Biotechnology and Its Applications
Last modified on:5 years agoReading Time:5MinutesCase Study Questions for Class 12 Biology Chapter 12 Biotechnology and Its Applications Question 1: Transgenic cows have extra gene or genes inserted into their DNA. Firstly the genes for the desired product is identified and sequenced. Then a gene construct containing this desired gene is introduced into female cow cells.…
