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Physics
The world around you!
Mechanics
Thermal Physics
Waves and Optics
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Electromagnetism
Modern Physics
Chemistry
Matter is everything!
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States of Matter
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Organic Chemistry
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Practice Tests
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The world around you!
Mechanics
Preface
Units, Vectors and Mathematical Physics
Kinematics
Newton's Laws of Motion
Work, Energy and Power
Linear Momentum
Circular motion
Rotational Motion
Oscillations
Gravitation
Fluid Mechanics
Mechanical Properties of Matter
Thermal Physics
Preface
Heat & Temperature
Calorimetry
Thermal Expansion
Heat Transfer
Kinetic Theory
Thermodynamics
Heat Engines
Waves and Optics
Preface
Wave Motion
Sound Waves
Nature of Light
Reflection
Refraction
Interference and Diffraction
Optical Instruments
Electricity
Preface
Electric Charge and Electric Field
Electric Potential
Gauss's law
Capacitors and Dielectrics
Current Electricity
Thermal and Chemical effects of current
Electromagnetism
Preface
Magnetism
Magnetic Forces
Magnetic field due to current
EM Induction
A.C. Circuits
Electromagnetic Waves
Modern Physics
Preface
Bohr's atomic model
Quantum theory
Nucleus
Radioactivity
Nuclear Reactions
Semiconductor Electronics
Communication Systems
Physics
Electricity
Thermal and Chemical effects of current
Joule's law of heating
Seebeck and Peltier effect
Thomson's effect
Faraday's laws of electrolysis
Joule's law of heating
Summary
ConceptMap
Worksheets
Summary
ConceptMap
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Gold Plating
Gold–plated aluminium cover on Voyager spacecraft that protects a gold–plated Sounds of Earth record
Gold plating is a method of depositing a thin layer of gold onto the surface of another metal, most often copper or silver. Electric current is passed through AgNO
3
or AgSO
4
solution which dissociates the molecule and gold is deposited on the cathode (copper or silver).
Learning objectives
After completing the topic, the student will be able to:
Explore joule’s law of heating and how it explains the transfer of energy from battery to electronic device.
Learn how the heating effect of current is harnessed in various electric heating appliances.
Examine Thermo-electric phenomena as a two-way process where Electric energy is converted into heat energy or vice-versa.
Learn how to obtain a thermocouple and how it transforms thermal energy into electrical energy conforming with seebeck effect.
Understand Peltier effect as the reciprocal process to seebeck effect.
Understand Thompson’s effect which explains the evolution of heat not only at junctions but also throughout the conductor.