This section of the chapter talks about electric current and the law of ohm’s law. I am going to assume that most of you, like me, have some electrical background and know what each means, so this is all you need to know.
First, let’s talk about electric current. You can think of electric current as simply the flow of electrons across a wire, but it doesn’t actually flow. In fact, it’s just the movement of electrons through a wire. This is an imprecise way of describing what current is, but let’s get into it anyway.
Now that I’ve described what current is, let’s talk about the law of ohms. The law of Ohm’s is basically the equation for the amount of electrical current flowing through a wire. It states that the voltage across a wire is equal to the current. In otherwords, the current is equal to the voltage times the resistance. In this case, the resistance is the resistance of the wire and the voltage is the voltage across the wire.
When I first heard about the law of Ohms I thought that the voltage was the voltage across the wire and the current was the current across the wire. But then I read the first few paragraphs of section 20.2 of the book and learned it was actually the voltage across the wire and the current was the current across the wire. It seems that when you’re dealing with current, there is a voltage and a resistance.
I think this is a great read and it provides some comfort to some people who just don’t feel like they are doing enough homework. I’ve had some guys in my life that felt like they were not doing enough homework and they were trying to get more information. I have a little sister that is in the middle of doing her best and she has a lot of problems with electrical power.
The voltage across a wire is measured in volts, and the current is measured in amperes. V stands for Volts, I stands for Amperes, and A stands for Ampacity. What you need to remember about what you are measuring is just how much power you are producing. This means that whatever you are measuring is the power your device is producing.
The next time you find yourself staring at the wall and not seeing anything, try to remember that power is everywhere. You don’t need to be able to count volts or amperes to know you are being powered by something.
The amount which the current is producing depends on the speed at which the current is being generated. As the current is changing, you will see that it is actually going to change. The last thing you want to happen is that you are being led by the power flowing through the device. This is most of what you are measuring. If you are using a power meter that is not being measured, then the voltage and current will not be proportional to the speed at which the current is flowing.
The reason why it is important to know what the voltage and current is going to be is because there is a lot of stuff that we are not measuring, and it will take too long to measure the difference in some situations.