By miecaprio
Keelektrikan
Keelektrikan bermaksud pengaliran arus elektrik yang berlaku di dalam suatu konduktor. Sumber elektrik pula boleh datang daripada pelbagai, termasuk bateri, dinamo, sel suria, sel kering, bateri basah, penjana kuasa dan lain-lain lagi.Alat elektrik hanya dapat berfungsi apabila terdapat pengaliran elektron...
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