7 résultats pour "electricity"

• Electricity

  The electricity PLAN        :   1­   Définition en g énéral de l’ électricit é 2­   L’histoire du commencent de l’ électricit é  3­       La nature   :          3.1­    Electricit é statique          3.2­    Courant du sens  électrique          3.3­    Sens du courant          3.4­    Analogie hydraulique      4­      Production      5­     Conclusion   Fran ç ais        :    3.4        / Analogie hydraulique        :    Pour comprendre certaines propri é té s du courant   é lectrique, il ...

• electricity

  1. A positively charged glass rod is bought close to a suspended metal needle. What can we say about the charge on the needle given that the needle is a) attracted? b) repelled? Answer : The electrostatic force obeys the principle of linear super-position which basically states that force between two particles does not get affected by the charge of the other and hence if the rod is brought close to a suspended metal needle and is getting attracted then needle definitely should possess op...

• Summary of renewable energies: ENERGY AND HOW DO WE MAKE ELECTRICITY ?

  ENERGY AND HOW DO WE MAKE ELECTRICITY ? Summary What is a non- renewable source ? Most of our electricity comes from power stations that use fossil fuels like coal, oil and gas to generate the electricity. They are called non-renewable sources because you can’t make any more and they will run out. Unfortunately, burning fossil fuels produces greenhouse gases like carbon dioxide (CO2) and methane which may cause global warming. List all non- renewable source. Nuclear fuel Coa...

• Low Power Modes

  I will explain you what are low power modes, how much energy they consume according to two different studies and how is it related to the global warming.  A lot of electricity is used by equipment that aren't performing their primary function. These equipment states are called low power modes, they are neither  completely «on» nor completely «off» as we can see in this figure. Ross and Meier (2000) reports that several international studies have found standby power to be as much as 10% of reside...

• Windmill.

• Nikola Tesla.

• Semiconductor.