You Can't Convert Milliamps to Volts. Here's Why It's a Good Thing.
We're rewiring your understanding of how electricity actually…
We're rewiring your understanding of how electricity actually works. You'll learn the 3-step process to calculate voltage from current, why it's a calculation and not a conversion, and how to apply it so you never fry a component again.
See?
See? You can't "convert" the flow rate into pressure.
It's the most important formula you'll ever learn…
It's the most important formula you'll ever learn in electronics. Ohm's Law Formula: V = I × R
Where:
V = Voltage (in Volts)
I = Current (in Amperes)
R = Resistance (in Ohms)
This elegant equation is our tool.
Always convert to the base units—Volts, Amps, Ohms—before…
Always convert to the base units—Volts, Amps, Ohms—before you do any other math. The importance of using a consistent system of units is a core principle in all sciences, as detailed by the NIST guide to SI units.
A professional step-by-step diagram showing the 3-step process:…
A professional step-by-step diagram showing the 3-step process: 1. A component with '20mA' label.
Applying Ohm's Law without knowing which type of…
Applying Ohm's Law without knowing which type of circuit you have will lead to incorrect results. Going Pro: Why Power (Watts) is the Secret Fourth Element
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For a deeper dive into these fundamental circuit…
For a deeper dive into these fundamental circuit principles, the lectures from MIT OpenCourseWare are an invaluable resource. ❓ Frequently Asked Questions
Can I calculate volts from milliamps without resistance?
For electronics, these are Volts (V), Amperes (A),…
For electronics, these are Volts (V), Amperes (A), and Ohms (Ω). Using milliamps directly in the formula will give you a result that is 1,000 times larger than the correct answer, leading to major design and diagnostic errors.