Saturday 15 October 2011

EFFECTS OF CURRENT


                    When current is passed through certain medium it produces some effects the obvious effects are:
1.      Heating effect
2.      Magnetic effect
3.      Chemical effect

1)      HEATING EFFECT: - When current is passes through a metallic wire, the electrons do some work against the resistance of the wire. This work appears in the form of heat. The heating effect of current is utilized in electric heater, hair drier, kettles toaster and electric iron.

2)      MAGNETIC EFFECT: - Oersted discovered that a current carrying conductor deflects a compass needle when it is placed near it. Thus a current carrying conductor produce a magnetic field around itself and this is called the magnetic effect of current

3)      CHEMICAL EFFECT: - When current is passed through electrolyte a chemical reaction take place this is called chemical effect of current.

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