A)0.00A B)0.22A C)0.33A D)9.37A What is the current through resistor R1? A)0.00A
ID: 1701318 • Letter: A
Question
A)0.00A
B)0.22A
C)0.33A
D)9.37A
What is the current through resistor R1? A)0.00A B)0.22A C)0.33A D)9.37AExplanation / Answer
30I1-30I2+0I3=10---->add first row to second row--->60I2-60I3=10 -30I1+90I2-60I3=0---> 0I1-60I2+150I3=-20-->0I1+60I2-60I3=10 add to third row--->90I3=-10 third row--->0I1-60I2+150*-1/9=-20--->I2=10/3*1/60=1/18 second row--->-30I1+90*1/18-60*-1/9=0--->35/3*1/30=7/18 I1=7/18 A I2=1/18 A I3=-1/9 A---> The minus sign means that I took my three circuits using a clockwise rotation when it should have been counterclockwise rotation. I hope you can follow this because you will have many more of the same for homework and tests. If you transfer what I wrote to a sheet of paper, you can understand it better. good luck!