Three types substances are mainly we have viz solid, liquid and gases. Solids are classified in three types according to electrical conductivities. This substances through electricity or charges can pass easily facing no prevention is called conductors. Conductors of electricity are silver, gold, iron, copper etc from metal. From these substances electricity cannot pass easily … [Read more...] about Semiconductor p type, n type semiconductors
Physics
Uses of heating effect of current – Joule’s law for production of heat
Joule's law for production of heat is relation between current and heat, the flow of current causes heat flowing through conductor due to the conductor resistance. The resistivity of conductor is not same for all conductor it varies conductor to conductor metal to metal. Due to flow of current heat production depends upon three factors viz. current, time and resistance of the … [Read more...] about Uses of heating effect of current – Joule’s law for production of heat
Difference between resistance and specific resistance
Difference between resistance and specific resistance is that resistance is the nature of prevention of any conductor and the specific resistance is that resistance which depends upon the material only the resistance of iron is similar as other iron metal and the resistance of copper metal is similar to other copper metal but resistance of iron and copper metal per unit area is … [Read more...] about Difference between resistance and specific resistance
Electrical Potential Definition & Origin of Electricity
Electrical potential or electric potential is the difference between two point charge higher positive charge means higher electric potential lower positive charge means lower electrical potential. We know in general positive charge is much heavier than negative charge like a table with a page, table is more heavier than a page if you want to move the table you have to apply … [Read more...] about Electrical Potential Definition & Origin of Electricity
Coulombs Law And Problems of Coulomb’s Law
Coulombs law is the law where you will know the force of between two charge placed in a certain distance the force may be attraction or repletion it will depend upon the nature of two charges. If those two charges are positive then the force will be repulsive and if two are opposite each other positive and negative then the force will be attractive force. Coulombs laws only … [Read more...] about Coulombs Law And Problems of Coulomb’s Law
