Minimum Resistance Calculation

profile picture

Minimum Resistance Calculation

So if you have a LED that should be powered by 3.2v and 0.024 amps, and a 9v battery, the calculation should be:

(9 - 3.2) / 0.024

And that gives you 240 ohms


Bonus : Watts Calculation

If you want to calculate the watts of this LED (which is actually the power it will consume) you have to do this:

Power (watts) = Voltage * Current (amps)

So:

Power = 3.2 * 0.024 = 0.0768 W

about me

profile picture

I consider myself as an IT Business Artisan. Or Consultant CTO. I'm a self-taught Web Developper, coach and teacher. My main work is helping and guiding digital startups.

more about me

follow me

newsletter

A weekly email with the latests articles

support my work

Start trading on binance
  • BTC

    BTC

    bc1qgw9a8hyqqwvcls9ln7vhql4mad0qkveutr2td7

  • ETH

    ETH

    0x3A720717Da03dB6f3c4a4Ff08BC64100205A79d0

2025 © My Dynamic Production SRL All rights Reserved.