calculate the power absorbed

Discussion in 'Homework Help' started by kd3041, Feb 2, 2011.

1. kd3041 Thread Starter New Member

Feb 2, 2011
7
0
Hi guys. I have a problem of calculate p1 in this question. p4=4x20=80W
p3=4x12=48W. p2=8x6=48W but how do you calculate p1? Theres only dependent current of 2 A known. Thanks

File size:
19.1 KB
Views:
48
2. Georacer Moderator

Nov 25, 2009
5,151
1,266
The diagram can tell you the value of I, as well as the voltage applied on the source P1. It just does that indirectly. Can you see it?

Hint: these quantities are defined by other sources.

3. kd3041 Thread Starter New Member

Feb 2, 2011
7
0
is it 8V cos the current source is in parallel with the 8V

4. Georacer Moderator

Nov 25, 2009
5,151
1,266
Yes. How about the current I. Can you find it?

5. kd3041 Thread Starter New Member

Feb 2, 2011
7
0
yh 2 A. Thanks

6. Georacer Moderator

Nov 25, 2009
5,151
1,266
Exactly. I is the same as the current flowing through source 4, as they are in the same branch. Thus the current through source 1 is 0.5I=2A.