Y gylched trydanol - the electrical circuit, gwifren - wire, gwifrau - wires, gorchuddio - cover, dargludydd - conductor, ynysydd - insulator, trydan - electricity, llifo - flows, trwyddo - through it, defnydd - material, strwythur - structure, arbennig - special, electronau - electrons, rhydd - free, atomau - atoms, symud - move, rhesi - rows, gwefr - charge, negatif - negative, ffurfio - forms, cerrynt - current, llif gwefr yw cerrynt - a flow of charge is a current, y gylched gyflawn - the complete curcuit, defnyddio - use, cydrannau - components/parts, goleuni - lights, ffrithiant - friction,

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