Thanks for responding!
If you had no idea how to solve the questions, you need to read this article about Kirchhoff’s laws.
You’ll find the answers to the question below this image:
1. If you measure the voltage over each of the two components – what’s the sum of the two voltages?
The sum of the voltages over the components in a series circuit always equals the applied battery voltage. That means the sum is 9 volts.
2. If you’re told you have 15 mA of current through the resistor – how much current flows through the LED?
The current in a series circuit is equal everywhere in the circuit, since the current has nowhere else to flow. That means the current through the LED is also 15 mA.
Tim Steger says
November 24, 2017 at 6:51 amIm studying mechanical engineering in new zealand but am aiming for a qualification in mechatronics. I have no idea about electronics but it has been a passion for many years. It just seems lost on me. I hope to find the knowledge with your help!
admin says
November 24, 2017 at 7:30 amCool. I know electronics can seem hard at times (it seemed very hard when I was learning). But it’s actually not that hard when you find the “right” way of thinking about the different concepts. Let me know if there is anything I can do to help!
Oyvind