P2 Electric Current

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  • Created by: leah
  • Created on: 17-06-13 12:42

An electric current is a flow of electric charge the cost of electricity depends on the amount of electrical power used the amount of time used for and the charge made for each unit of electricity the more electrical energy used the greater the cost. electrical supplies can be direct current or alternating current 

conventional current flows from the positive terminal of the power source to the negative terminal 

in wires negatively charged electrons carry charge. These are free to move from atom to atom in conductors such as metals they move in opposite direction to the conventional current 

Calculating electrical power 

electrical charge is measures in Coulomb(C) the amount of electrical charge that moves…

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