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DC Current Uses

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Last updated date: 01st Mar 2024
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An Overview of DC Current

Whenever the charge flows in a closed circuit with respect to time, there generates current in that circuit. This current is divided into two types on the basis of type of flow of charge. If it flows only in one direction, it is known as direct current or DC, and if it changes its position periodically, it is known as alternating current or AC.


Simple Electric Circuit


Simple Electric Circuit in Which Current Flows


What is DC Current (Direct Current)?

DC or direct current is the type of current which keeps on flowing in only one direction in the circuit. The current that flows in appliances which work on batteries, the current flowing in flashlights is direct current.


Direct Current Examples

Some of the examples of devices that use DC current are mobile phones, laptop, flashlights, microwave, etc.


Mobile Phone


Mobile Phone


Flash Light


Flash Light


List of AC and DC Appliances

Many appliances can not take direct current and therefore direct current is converted into alternating or AC current before supplying it to them. All appliances do not work on AC or on DC, different appliances are designed in different ways, based on their usage and power requirements. Some of them work on AC power supply while some of them work on DC power supply. Let’s have a look on the list of AC and DC appliances.

AC Appliances:

  • Microwave oven

  • Dishwasher

  • Toaster

  • Coffee pot

  • Washing machine

  • Refrigerator

  • Air cooler

  • Cloth dryer


DC Appliances:

  • Head lights

  • Screen wipers

  • Torch

  • TV remote controller

  • DC motors

  • Cell phones


Why is DC Current Useful?

DC current is of great use as it provides a constant current to the appliance, i.e., without changing its direction, which in turn gives better output and works efficiently.


Where is DC Current Used?

A DC motor is used to obtain or generate DC current. It is used in various appliances, some of them, which we use in our daily routine, are flashlights, TV remote, headlights of cars, etc.


Solved Questions

1. What are the two types of current electricity?

Ans: AC and DC currents are the two types of current electricity.


2. Where is DC current used in cars?

Ans: In the windshield wipers of cars, DC motors the DC current is used.


3. What do you understand by AC current?

Ans: AC or alternating current is a type of current which changes its direction of flow over a period of time.


Summary

There are two types of current namely AC (Alternating Current) and DC (Direct Current) based on the direction of current flow. DC current is difficult to transport over long distances due to power loss issues, therefore in order to transmit the current, it is converted into AC current. DC current is safer than AC current and provides more efficient output in appliances. It is employed in various industries and tools in our day-to-day lives. 

FAQs on DC Current Uses

1. Why is the DC current converted into AC current before supplying it to households?

This conversion is done to minimise the power loss during transmission over long distances.

2. Which type of current is more dangerous?

AC current is about 5 times more dangerous than DC current.

3. How do we convert DC into AC?

This work of converting DC into AC is done by inverters.

4. Can we convert AC current back to DC current?

Yes. There are special devices known as rectifiers which convert AC current into DC current.