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WELCOME

WELCOME. TOPICS. ELECTRICITY. Electricity. The energy sources we use to make electricity can be renewable or non-renewable, but electricity it self is neither renewable or non-renewable. Electricity Basics. Electricity Is a Secondary Energy Source

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WELCOME

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  1. WELCOME

  2. TOPICS ELECTRICITY

  3. Electricity The energy sources we use to make electricity can be renewable or non-renewable, but electricity it self is neither renewable or non-renewable.

  4. Electricity Basics Electricity Is a Secondary Energy Source Compact fluorescent light bulbs use a fraction of the electricity as incandescent light bulbs to produce the same amount of illumination.

  5. . Electricity is the flow of electrical power or charge. It is both a basic part of nature and one of our most widely used forms of energy. Electricity is actually a secondary energy source, also referred to as an energy carrier. That means that we get electricity from the conversion of other sources of energy, such as coal, nuclear, or solar energy. These are called primary sources. The energy sources we use to make electricity can be renewable or non-renewable, but electricity itself is neither renewable or nonrenewable.

  6. Physiological effects Main article: Electric shock A voltage applied to a human body causes an electric current through the tissues, and although the relationship is non-linear, the greater the voltage, the greater the current .The threshold for perception varies with the supply frequency and with the path of the current, but is about 0.1 mA to 1 mA for mains-frequency electricity, though a current as low as a microamp can be detected as an electrovibration effect under certain conditions. If the current is sufficiently high, it will cause muscle contraction, fibrillation of the heart, and tissue burns. The lack of any visible sign that a conductor is electrified makes electricity a particular hazard. The pain caused by an electric shock can be intense, leading electricity at times to be employed as a method of torture. Death caused by an electric shock is referred to as electrocution. Electrocution is still the means of judicial execution in some jurisdictions, though its use has become rarer in recent times

  7. Electrical phenomena in nature The electric eel, Electrophorus electricus Electricity is not a human invention, and may be observed in several forms in nature, a prominent manifestation of which is lightning. Many interactions familiar at the macroscopic level, such as touch, friction or chemical bonding, are due to interactions between electric fields on the atomic scale. The Earth's magnetic field is thought to arise from a natural dynamo of circulating currents in the planet's core.[72] Certain crystals, such as quartz, or even sugar, generate a potential difference across their faces when subjected to external pressure.[73] This phenomenon is known as piezoelectricity, from the Greekpiezein (πιέζειν), meaning to press, and was discovered in 1880 by Pierre and Jacques Curie. The effect is reciprocal, and when a piezoelectric material is subjected to an electric field, a small change in physical dimensions take place

  8. Electricity Problems (Loadshedding) in Bangladesh. In our country Electricity problem increase day by day. Load shedding is a vital problem in our daily life. All works are stop when electricity is gone. Office, School/college/university , hospital and industries are total stops their working procedure for load shedding .

  9. What are the Advantages: 1. Basic advantage in privatization is accurateness and commitment towards the service as they private organizations are very much concerned about the profits they make ultimately which depend on the quality of service being provided by them and the public response to it. 2. Privatization generates more revenue compared to government enterprises, thus govt can indirectly earn a bit more by leasing out enterprises to private organizations. 3. Customer support and satisfaction basically is of much interest in private enterprises comparatively.

  10. Advantages

  11. Disadvantages: 1. The biggest threat is reliability. There is nothing that backs up the private organizations, where as govt can back up its enterprises easily in terms of funds. There are more chances of bankruptcy in private orgs where are 0 to few in govt orgs. 2. Though the quality of service may be little compromised, its reliable. 3. Some departments need social responsibility which can be done only by government like police department, traffic management.

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  13. THANK YOU

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