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electric shock
It increases resistance.
It doesn't necessarily have a 'function'; it is simply the natural consequence of applying a potential difference across a conductor. However, this is usually done for a reason, and its function is then derived from one or other of the three effects of that current:heating effect -e.g. electric heatersmagnetic effect -e.g. electric motorschemical effect -e.g. electrolysis (electroplating)
The magnetic effect of electric current is known as electromagnetic effect. It is observed that when a compass is brought near a current carrying conductor the needle of compass gets deflected because of flow of electricity. This shows that electric current produces a magnetic effect.
The flow of electric charges is current.
electrons are knocked off atoms causing electricity to flow
It is called an electric current.
Yes true!
In electricity, this happens with alternating current. It is the tendency for the electrons to flow near thesurface ("skin") of the conductor.
There are three effects produced by an electric current:heating effectmagnetic effectchemical effect
Electric Current is the flow of electrons and hence charge
It is not true that the Doppler effect has anything to do with electricity and the flow of current. The Doppler effect involves pitch and sound frequency of moving objects, for example the apparent noise changes of an approaching car.