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Ohm's Law Continued

So now we have 3 different ways that we can algebraically express Ohm's Law.

OHM'S LAW FORMULA or OHM'S LAW FORMULA or OHM'S LAW FORMULA

But of what significance is it? Here is the gist of it. If we know 2 out of the 3 factors of the equation, we can figure out the third. Let's say we know we have a 3 Volt battery. We also know we are going to put a 100 W resistor in circuit with it. How much current can we expect will flow through the circuit? 



Without Ohm's Law, we would be at a loss. But because we have Ohm's Law, we can calculate the unknown current, based upon the Voltage and Resistance.






Let's try another problem. Say we have the circuit below. We know the Voltage and the Current, because we have meters to indicate such in the circuit. When we plug in the unknown load resistance, the Voltmeter reads 45V and the Ammeter reads 2 Amperes. What is the resistance of the load? IT IS A PICTURE OF WHAT'S DESCRIBED IN THE TEXT. DOWNLOAD A BROWSER THAT SHOWS PICTURES!

Well now, if'n I done my math a'right, I should be using this formula:

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Hi, I`m Sostenes, Electrical Technician and PLC`S Programmer.
Everyday I`m exploring the world of Electrical to find better solution for Automation. I believe everyday can become a Electrician with the right learning materials.
My goal with BLOG is to help you learn Electrical.

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