Join Mike Meyers for an in-depth discussion in this video Electricity basics, part of CompTIA A+ Exam Prep (220-901) Part 2: Core Hardware.
- The CompTIA A+ exams expect you to understand…some very basic aspects about electricity.…So the best way to learn about electricity…is to think about water.…Now--…(water rushing)…if you take a look at water,…you're going to have waters being supplied…from the city water company and this water…comes out at a certain amount of pressure…which is specified and guaranteed by the water company…and depending on how big the pipe is,…it will define how much water you can have.…
Now, the important thing is, is as long as…the water's off, the only thing we're guaranteed…is a certain amount of water pressure.…In the world of electricity, electrical pressure…is what we call volts.…So, it's under, when you think about how much…water pressure is, think about voltage, okay?…The next thing is that we would have what's called…your volumetric flow or how much water's actually flowing.…(water rushing)…When that takes place, we call that amperage.…So amperage is more like the size of the pipe itself.…
So, when you take volts and amps,…
The CompTIA A+ 220-901 exam is comprised of six key parts. The second, core hardware, is covered by this course. Instructor Mike Meyers explains the essential components and functions of motherboards, power supplies, and hard drives. He also shows you how to work with chipsets, troubleshoot electrical issues, implement RAID, and how to determine which hard drive technology to use depending on the circumstance.
Note: The six courses designed for the CompTIA A+ (220-901) exam preparation include core processing, core hardware, peripherals and building a PC, displays and printers, networking, and laptops and mobile devices.
- Working with motherboards, chipsets, and expansions
- Choosing a power supply
- Evaluating hard drive technologies
- Implementing RAID
- Troubleshooting issues