Very simple superposition circuit

[James889]

Hi,

I have didn't have an answer to this, so i need someone to tell me whether my work is correct or not.

This is the circuit:
[PLAIN]http://img251.imageshack.us/img251/4081/circuit1.png

I need to determine the current I.

Remove the first source and calculate the current provided by the other.
[PLAIN]http://img255.imageshack.us/img255/1665/circuit11.png


The total resistance is 150ohm $$100 + \frac{100 \cdot 100}{100+100}$$

I = 10/150 ~0.067A

And the current through the resistor is:

$$\frac{100}{200} \cdot 0.067 = 33,5mA$$


Do the same with the other source
[PLAIN]http://img69.imageshack.us/img69/9727/circuit12.png

I = 5/150 ~0.033A
$$\frac{100}{200} \cdot 0.033 = 16,5mA$$


So the current I should be 50mA

 

[n.karthick]

yes correct