Question
What type of current flows in only one direction?
Answer Options
- A) Alternating
- B) Direct
- C) Normal
- D) Smooth
Correct Answer: B
Explanation
Direct Current (DC) is a type of electrical current where the flow of electrons is constant and moves in only one direction. The voltage level remains constant (or smooth) over time.
DC is typically produced by batteries and is required by almost all electronic circuits and radio components for internal operation. Power supplies must convert the \text{AC} wall voltage into \text{DC} for the radio to function.
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