Consider the following circuit. Answer questions...

Consider the following circuit. Answer questions below. Take R1 = 1?, R2 = 2?, R3 = 1?, R4 = 1?, R5 = 2?, R6 = 2?, R7 = 1?, V1 = 10V, V2 = 5V, V3 = 2V. 1. Find current on R4 (magnitude and direction). 2. Find the potential difference between a and b and indicate which is higher.

Transcript

00:01 Hi guys, now in this one, the diagram is given to us.

00:02 Let's say all the current is coming on this, what? on this junction.

00:09 And let's say voltage on this junction is equal to v.

00:14 I'm going to grounded this part 0.

00:18 Now current in this branch is equal to what? current in this branch.

00:22 Let me see that this is i.

00:24 So current in this branch is simply this is 5 minus v.

00:30 Divide by total current which is 2 1 1 which is what 4 plus current in this branch is what this will be 10 minus v divide by this will be bought 1 plus again here we have what current in this branch let me say that the current is going like this so this what total register is what 2 and 2 and this is what 1 5 so this will be bought this can be written as what we are moving like this so this is 2 minus v divide by what this is 5 is equal to 0 now let's do what lcm so we have a 5 times 5 minus v plus this is 20 times 20 minus v and this is 10 times sorry 4 times 2 minus v is equal to 0 from here i can say that this is 25 and we have a 200 we have a 8 minus of 5 20 v and 4v which is about 29 v so from here v is equal to what this is 225 plus 8 which is the 233 divide it 29 so this is 233 divide by 29 is 2 3 3 divide by 29 is equal to this is 8 .0 3 voltage at this point 0 3 voltage at this point is what 8 .03 volt that means what the voltage here is what higher that means what current will be flow like this i'm so sorry current will be our assumption is wrong current will be flow like this current will be flow like this and here the direction of the current will be like this this is i1 here this is i2 here and there will be i3 here we need to find current in r4 so simply current is equal to what this is 10 minus v that means this is 10 minus 8 .03 which is what this will be current in this branch i is equal to i3 is equal to this is 1 .97 ampere next we need to find out potential across point a and point b this is a point a if you move in this direction so current is going like this so this is positive and negative so so, va is equal to what? va, va is equal to this is v minus ir, i1 times r1.

03:40 Now v is what, 8 .03 minus i1...

Question

Consider the following circuit. Answer questions below. Take R1 = 1?, R2 = 2?, R3 = 1?, R4 = 1?, R5 = 2?, R6 = 2?, R7 = 1?, V1 = 10V, V2 = 5V, V3 = 2V. 1. Find current on R4 (magnitude and direction). 2. Find the potential difference between a and b and indicate which is higher.

Please give Ace some feedback