Ohm's Law with Calculation

 Hello, let's discuss the calculation of voltage, current and resistor in an electrical circuit. We will take the example of ohm's law to learn the calculation of voltage, current and resistors. So, in this stage, a question is, what is ohm's law? We ware going to learn ohm's law completely in this article i believe. So let's start with learning ohm's law definition.

Ohm's Law

Ohm's law states that "The current (through a conductor) is directly proportional to the voltage. Introducing the constant of proportionality, the resistance.  

The formula of ohm's law is,  I=V/R

Ohm's law is a relationship of voltage, current, resistance, and power. Which we can find these formulas known as Ohm’s Law:

V  = I x R — “V” is “I” multiplied by “R”.

I  = V / R — “I” is “V” divided by “R”.

R  = V / I — “R” is “V” divided by “I”.

P  = V x I — “P” is “V” multiplied by “I”.

How many currents the does lamp use?

P = V x I

So: I = P / V ; P = 10W , V = 12V.

I = 10W / 12V

= 0.83A

If you want to use it for 2 hours. You need to use a 12V battery that can power more than 2Ah up. Let's Suppose, I want to know the current that the lamp is using. So I closed my finger at “I”. We find the current with Ohms law triangle. Then, we can get the current(I) from Ohm’s law.

I = V/R

V is the voltage of the battery, 12V.

R is the resistance of the lamp. Which I measure its resistance to be about 10 ohms.

So the current is.

I = 12V / 10 ohms

= 1.2A

Thus, the current that the lamp is about 1.2A. You will see that, we can find the current, voltage and resistance with Ohms law triangle. This is the very basic calculation and concept of voltage, resistance and current. We also have discussed about the power. I hope this helped you to learn basic concept. We will discuss deeply about ohm's law in another article.