What is Direct Current ?

Virtually all electronic

We can use our handy graphing calculator to graph this equation. If no graphing calculator is available we can use a free online graphing program like Desmos (Note that you might have to use ‘y’ instead of ‘v’ in the equation to see the graph).

Notice that, as we predicted, the voltage rise up to 170V and down to -170V periodically. Additionally, 60 cycles of the sine wave occurs every second. If we were to measure the voltage in our outlets with an oscilloscope, this is what we would see

Dc is like harmfull

DC stands for Direct Current, which is electrical current that flows in one direction.

ou might have heard that AC voltage in the US is 120V. This is also correct. How? When talking about AC (since the voltage changes constantly),

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, it is often easier to use an average or mean. To accomplish that, we use method called “Root mean squared.” (RMS).

Has been sucessfully

It is often helpful to use the RMS value for AC when you want to calculate electrical power. Even though, in our example

In dc circuits, the current is in one direction unlike the alternating current

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It is often helpful to use the RMS value for AC when you want to calculate electrical power. Even though, in our example

we had the voltage varying from -170V to 170V, the root mean square is 120V RMS.

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As the direct current flows, the electrons

Home and office outlets are almost always AC. This is because generating and transporting AC across long distances is relatively easy.

Its oftten harmful

At high voltages (over 110kV), less energy is lost in electrical power transmission. Higher voltages mean lower currents, and lower currents mean less heat generated in the power line due to resistance.

They move from the negative terminal to the positive

Direct cuirrent flows

AC can be converted to and from high voltages easily using transformers.

The DC is usually used in low-voltage applications such as battery operated equipment

AC is also capable of powering electric motors. Motors and generators are the exact same device,

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