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Tag: Conductivity

Properties of Substance

Science > Chemistry > Introduction to Chemistry > Properties of Substance All matter has physical and chemical properties. Extensive properties are those properties of a substance which depend on the amount of substance. They vary with the amount of the substance. Examples: Mass, weight, and volume. Intensive properties are those properties of a substance which do not depend […]

Physics

Temperature Dependence of Resistance

Post author By Hemant More
Post date January 2, 2020
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Science > Physics > Current Electricity > Temperature Dependence of Resistance In this article, we shall study the effect of temperature on the value of resistance and thermistors and their uses. A metallic conductor consists of a large number of free electrons. These electrons are always in a state of random motion. When a potential […]

Tags Bad conductors, Conductivity, Conductor, Current Electricity, Effect of temperature on resistance, Electric current, Good conductors, Insulators, Ohm's law, Origin of resistance, Potential difference, Resistance, Resistivity, Semiconductors, Specific resistance, Temperature Coefficient of resistance, Uses of thermistors

Physics

Introduction to Current Electricity

Post author By Hemant More
Post date January 2, 2020
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Science > Physics > Current Electricity > Introduction In this article, we shall study the concept of current electricity, the resistance, ohm’s law, and the conductance of a conductor. Electric Current Through Conductor: A conductor is made up of very minute particles called atoms. Atoms consist of a positively charged nucleus and negatively charged electrons […]

Tags Bad conductors, Conductivity, Conductor, Current Electricity, Electric current, Good conductors, Insulators, Ohm's law, Origin of resistance, Potential difference, Resistance, Resistivity, Semiconductors, Specific resistance

Physical Chemistry

Ionic Conduction

Science > Chemistry > Electrochemistry > Ionic Conduction The conductance of an ion depends on its size in an aqueous medium or in the solvent. Bigger is the ionic size lesser is its conductance Example: The order of size of hydrated ionic radii of alkali metal cations is as Li+(aq) < Na+(aq) < K+(aq)< Rb+(aq)< Cs+(aq). Hence the ease […]

Physical Chemistry

Introduction to Electrochemistry

Post author By Hemant More
Post date December 18, 2019
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Science > Chemistry > Electrochemistry > Introduction In this article, we shall study the concept of electrochemistry, its cause, and its terminology. Electrochemistry is a branch of chemistry which deals with the interrelationship between chemical energy and electrical energy. The study of electrochemistry is broadly divided into two branches. a) Conversion of chemical energy into […]

Tags Conductance, Conductivity, Electrochemistry, Electrolytic conductors, Electronic conductors, Oxidant, Oxidation, Oxidizing agent, Redox reaction, Reducing agent, Reductant, Reduction, Resistance, Resistivity, Specific conductance, Specific resistance