Effects of electric current
Heat
The movement of electrons colliding
themselves with others create heat
E = I^2 x R x t
Sound
Electricity can be transformed
into sound through some devices
Bell
Buzzer
This can happend thanks to piezoelectric effect
which change shape when electricity is applyed
making the speaker or buzzer work.
Electromagnetic Effects
Electric circuit generates
a electromagnetic field
Light
Incandescent Bulbs
Fluorescent Tubes
Light Emiting Diodes (LED)