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Electrostatics and Electric Field
access_time 2022-12-25T11:00:51.135Z face Sonika Agarwal
Electrostatics and Electric Field Electric charges and fields Electric charges is of two types positive and negative loss of electrons gives positive charge and gain of electrons gives negative charge to a body SI unit of charge is Coulomb Dimensional formula is [AT] Quantization of charge The charg...
Magnetic Effects of Current - Summary of Lesson
access_time 2022-12-25T10:56:48.913Z face Sonika Agarwal
Magnetic Effects of Current Magnetic field-- In 1820 O rested observed that a compass needle shows deflection when brought near a current carrying wire this means electric current gives rise to magnetism - This law gives magnitude of magnetic field at any point due to current carrying conductor acco...
Semiconductor Devices
access_time 2022-12-25T10:27:03.836Z face Sonika Agarwal
Semiconductor Devices Semiconductors are the materials whose conductivity and resistivity lie in between metals and insulators When temperature higher than zero degree Kelvin some of the electrons are excited from valence band to conduction band creating an equal number of holes in the valence band ...
Dual Nature of Radiation and Matter
access_time 2022-12-25T10:19:44.237Z face Sonika Agarwal
Dual Nature of Radiation and Matter Photo Electric Effect The phenomenon of photoelectric effect is discovered by Hertz in 1887 When the light of certain frequency is allowed to fall on a metal surface and electrons are ejected from the metal surface this phenomenon is called photoelectric effect Or...
Test Series for Class 9 Maths
access_time 2022-12-23T15:22:47.341Z face Sonika Agarwal
Mock Test Series for Maths Number System Mutiple choice questions 1➤ What is value of 1/√2 ⓐ √2/2 ⓑ 1/2 ⓒ 2/4 ⓓ None 2➤ If a denominator divides a numerator completely it is ⓐ Terminating Decimal ⓑ Irrational ⓒ Non terminating Decimal ⓓ None 3➤ 1/3 is terminating decimal or non terminating decimal ⓐ...