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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NEET DPP Biology Ch-24 Sexual Reproduction In Flowering Plants
Last modified on:5 years agoReading Time:27MinutesQ.1. Entry of pollen tube through micropyle is(a) Chalazogamy (b) Mesogamy(c) Porogamy (d) Pseudogamy Answer Answer: (c) In porogamy the tip of pollen tube enters the micropyle, pushes through the nucellar tissue & finally pierces the eggapparatus end of the embryo sac. If pollen tube enters through the chalazal side it…
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Physics MCQs for Class 12 with Answers Chapter 3 Current Electricity
Last modified on:1 year agoReading Time:32MinutesMCQs based on Current Electricity: Q.1. In a current carrying conductor the net charge is(a) 1.6 x 10–19 coulomb (b) 6.25 x 10–18 coulomb(c) zero (d) infinite Answer Answer: (c) Explanation: In a current carrying conductor, the net charge is zero. Q.2. The current which is assumed to be flowing in…
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MCQ Questions on Refraction of Light for Class 10 Science
Last modified on:4 years agoReading Time:15Minutes Question 1:Four students showed the following traces of the path of a ray of light passing through a rectangular glass slab.The trace most likely to be correct is that of student:(a) I (b) II (c) III …
