Electromagnetism

Q: Why the voltage is stepped up before transmitting electricity over a long distance? A: Stepping up the voltage can reduce the current in the cable. This reduces the power loss in the cable during transmission. [This image is shared by its author Aatu Liimatta in Wikipedia Image. This file is licensed under the Creative … Read more

Wind Power[This image is shared by Wagner Christian. This file is licensed under the Creative Commons Attribution ShareAlike 2.5 License. ] Advantages The advantages of using wind as a source of energy to generate electricity are. It is renewable energy. It does not pollute the environment. It is suitable for the mountain area because the wind speed in the mountain … Read more

Biomass is biological material derived from living organisms such as wood and animal waste. As a renewable energy source, biomass can either be used directly via combustion to produce heat or indirectly after converting it to various forms of biofuel. Heat energy produced from the burning of biomass can be used to generate electricity. Advantages … Read more

Nuclear Power Advantages The advantages of using nuclear energy as a source of energy to generate electricity are. The nuclear fuel such as uranium and plutonium has high energy capacity. A small amount of uranium can produce a huge amount of energy. Nuclear energy does not pollute the air. Disadvantages The disadvantages of using nuclear … Read more

Solar power Advantages The advantages of using solar energy as a source of energy to generate electricity are. It is renewable energy. Sunlight is free and can be obtained easily. It does not pollute the air. Disadvantages The disadvantages of using solar energy as a source of energy are. A large area is needed to … Read more

Fossil Fuel. Advantages The advantages of using fossil fuel such as petroleum, natural gas and coal as a source of energy to generate electricity are. It is relatively easy to be collected as they are present in large amount in one place. It contains high energy capacity. Disadvantages The disadvantages of using fossil fuel as … Read more

HydroelectricThe advantages of using hydroelectric as a source of energy to generate electricity are. It is renewable energy. Building a dam does not pollute the environment. In a lot of countries, water can be easily obtained and is free. Building a hydroelectric plant does not involve very high technology as a nuclear power plant. The … Read more

Renewable and Non-renewable Energy The frequently asked questions related to this topic are: what is renewable energy? the examples of Renewable and non-renewable energy and the advantages of using renewable energy. Renewable energy sources are the energy sources which can be continuously replaced. Examples of renewable energy are: Hydro energy Solar energy Wind energy Geothermal … Read more

Factors that affect the efficiency 1. The heating effect of current in a coil. Power is lost as heat I2R whereby I is the current flowing through the coil and R is the resistance of the coil Methods to increase the efficiencyUse thick copper wires of low resistance. Use coolant to decrease the temperature of … Read more