Ans:
Direct Current (DC) | Alternating Current (AC) |
The electric charge flows in only one direction, from the positive terminal to the negative terminal. It maintains a constant polarity. | The direction of the electric charge reverses periodically. It constantly changes direction, moving back and forth, creating a cycle. |
The voltage in DC remains constant in terms of polarity. It doesn’t switch between positive and negative. | The voltage in AC continually changes polarity. It alternates between positive and negative values. |
Commonly used in batteries, electronic devices, and many small appliances because they require a constant voltage and current. | AC is used for power distribution in homes and businesses because it can be easily transformed to different voltages and is more efficient for long-distance transmission. |
DC can be generated using devices like batteries and solar cells. | AC is typically generated by power plants and generators, as it is more practical for large-scale power generation and distribution. |