Name some sources of direct current.
(N/A) Some common sources of direct current $(DC)$ include:
$1$. Electric cells (or batteries).
$2$. $DC$ generators.
$3$. Photovoltaic cells (solar cells).
$1$. Electric cells (or batteries).
$2$. $DC$ generators.
$3$. Photovoltaic cells (solar cells).
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