Troubleshoot Steps notice
Hi thank you for visiting this forum, please register to view this Section .

Please register to view this section Thank you
  • Hi, have you got any guides or steps to troubleshoot laptop motherboards post here please, help each other.
  • Hi howdy? we glad you to be here. Are you interested to learn Laptop chip level repair work, then this is a small forum join in the laptop repair community to help each other.
    Please Register

Measuring Current, Voltage and Resistance

Status
Not open for further replies.
Current, voltage and resistance can be measured using a multimeter
  • Current is measured in amperes or Amps (A)
  • Voltage is measured in Volts (V)
  • Resistance is measured in Ohms (Ω)

The Water Analogy

For most people is much easier to understand electric concepts when comparing
electric current with water flow.
Imagine a system of plumbing pipes through which water flows. Some sort of force
has to drive the water, such as a water pump, which is analogous to a voltage source.
Imagine that one section of the pipes has a much smaller diameter than the rest of
the system. That section exhibits much higher resistance to the water flow.
So, for the water current to pass at the same speed, more force is required. The same
happens with electric circuits.

water analogy.png

Ohm’s Law and Electric Power:

When working with electronics there are two equations that you can’t ignore,
because they are the foundation of everything that happens in your circuit.
If you don’t like math, don’t worry.
These are very straight forward formulas and we’ll show you how to use them with
practical

Ohm’s Law

There is a relationship between current, voltage and resistance, which is represented
by Ohm’s Law.
The relationship is very simple; the voltage drop on a resistive component is
proportional to its resistance and the current flowing through it.

𝑉 = 𝐼 × 𝑅

  • V = Voltage in volts (V)
  • I = Current in amps (A)
  • R = Resistance in ohms (Ω)

Electric Power:​

The power is the amount of energy that your circuit consumes per second.
It is measured in watts (W) and can be calculated as follows:

𝑃 = 𝑉 × I
  • P = Power in watts (W)
  • V = Voltage in volts (V)
  • I = Current in amps (A)
 
Status
Not open for further replies.

Find member

  • Hi. The website contents will be filled soon.the typing and writings works are going on. So please be patience, it will have more resources soon. If you have anything to post to learn please post / share it.
Top
AdBlock Detected

We get it, advertisements are annoying!

Sure, ad-blocking software does a great job at blocking ads, but it also blocks useful features of our website. For the best site experience please disable your AdBlocker.

I've Disabled AdBlock