O'Reilly logo

Mastering Arduino by Jon Hoffman

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Current

In a parallel circuit, current will be different in each branch. The total current of the circuit (the current coming out of the power source) will be equal to the sum of the current in each branch. This means that current coming out of the power source will equal the sum of the current running through the 220-ohm resistor branch and the 330-ohm resistor branch.

Let's look at this with Ohm's law to see how this works. To calculate current with Ohm's law we use the formula I=V/R, which means the current equals the voltage divided by the resistance. Earlier, in the resistance section, we calculated that the resistance in the circuit was 132 ohms and we know that the voltage is 9 volts, therefore, the total current will equal 9 volts/132 ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required