# How to calculate voltage and current of this circuit?

1) 448 ohm

2) 1.6 V

3) 0.13 V

About the question 4, why 6V/300 = 0.02A = 20mA is wrong? Can I use current divider like 0.01339 * (3.3 * 10^3 / (300 + 3.3 * 10^3))? But, the answer still wrong.

• Start by showing how you might begin to address question 3. Nobody's going to help you without some means of seeing where you go wrong. Jan 31, 2020 at 9:11
• Break it up into smaller problems like you did for questions 1, 2 and 3. If you’ve gotten as far as answer #3 I’m sure you can apply the same techniques to manage the other two as well. Jan 31, 2020 at 9:28
• What is the voltage across the 300 ohm resistor? Jan 31, 2020 at 10:56
• To further nudge you in the right direction, the 6V isn't dropped entirely over the 300Ω resistor; if it was, that's saying the resistor is connected between 6V and ground. So you can either (a) Find the drop across the 300Ω, so I = (6-Vx) / 300, or (b) Find the current over that entire resistor branch. That current is the very same that passes through 300Ω, so I = 6 / (the equivalent resistance of that branch) Jan 31, 2020 at 13:31