Difference between Alternating current and Direct current?

Question

Answer

Answer

In direct current (DC), the electric charge (current) only flows in one direction. Electric charge in alternating current (AC), on the other hand, changes direction periodically. The voltage in AC circuits also periodically reverses because the currentchanges direction

Answer

A DC stands for DIRECT CURRENT. DIRECT CURRENT and VOLTAGE has constant amplitude at all time, hence there is no variations in its amplitude and has zero frequency. While the AC stands for Alternating current, which means the voltage and current varies with time. It has different Amplitude at different time. Due to variation it has some constant frequency, which is normally 50 or 60 Hz.

Answer

Alternating Current vs Direct Current

Definition:
- Alternating current (AC) is a type of electrical current where the flow of electrons periodically reverses direction.
- Direct current (DC) is a type of electrical current where the flow of electrons is constant in one direction.

Waveform:
- AC has a sinusoidal waveform, constantly changing from positive to negative.
- DC has a constant and steady waveform, always flowing in one direction.

Usage:
- AC is commonly used in households for powering electrical appliances as it can be easily converted to different voltages.
- DC is commonly used in electronics, such as batteries and electronic components, where a constant voltage is required.

Transmission:
- AC is preferred for long-distance power transmission as it can be easily stepped up or down using transformers.
- DC is used for shorter distances or in situations where a constant voltage is needed, such as in data centers.

Efficiency:
- AC tends to lose more energy during transmission due to resistance and inductance.
- DC is more efficient for long-distance transmission as it experiences lower energy losses.

Conversion:
- AC can be easily converted to DC using rectifiers.
- DC can be converted to AC using inverters.

In conclusion, AC and DC have their own advantages and applications depending on the specific requirements of the electrical system. Understanding the differences between the two types of currents is essential for designing effective electrical systems.

Answer

In direct current (DC),
the electric charge only flows in one direction.
the voltage is also constant .
Dc current is produced by cells and batteries

In alternating current (AC), electric charge changes direction periodically.
The voltage in AC circuits also periodically reverses because the current changes direction.
Ac current is produced in power stations

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