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What is an electric current that moves in one direction with constant strength?

A. Static electricity
B. Thermal electricity
C. Alternating current
D. Direct current


Sagot :

Final answer:

Direct current (DC) flows in one constant direction, while alternating current (AC) changes direction periodically.


Explanation:

Direct current (DC) is electricity flowing in a constant direction, characterized by the flow of electric charge in only one direction. It is produced by sources like batteries with constant voltage. This is in contrast to alternating current (AC), where the movement of electric charge periodically reverses direction.


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