Luokat: Kaikki - heat - light - sound - magnetism

jonka pablo balbuena 4 vuotta sitten

226

ELECTRIC CURRENT

Electric current involves the flow of electrons through a conductor, but this movement is typically slow and chaotic. One of the key phenomena associated with electrical current is the Joule effect, where heat is generated as current passes through a resistive material.

ELECTRIC CURRENT

ELECTRIC CURRENT

HEAT

MOVEMENT OF ELECTRONS THROUGH AN ELECTRICAL CABLE IS SLOW AND DISORDERLY
JOULE EFFECT : E=I2 X R X t

LIGHT

LIGHT-EMITTING DIODES
Has layers of semiconductor materials when electricity is applied to the led then the electrons cross over into the active layer
FLUORESCENT BULBS
It has a metalic fillament, when the electric current passes through the filament electrons are emited into the inert gas
INCASDECENT BULBS
electric current passes through the metalic filament of the bulb

ELECTROMAGNETIC EFFECTS

Michael Faraday noticed that electricity could be generated by using a magnet anelectrical conductor this allows us tu build dynamos and alternators

SOUND

We can transform sound into electric current using electromagnetical devices such us bells, some of these de vicesare based on the piezoelectric effect

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