Kirchiff current law explained in detail for student of cengineering

engg

1. Kirchhoff’s Current and
Voltage Laws

2. KCL (Kirchhoff’s Current Law)
The sum of the currents
entering a node equals the
sum of the currents exiting
a node.

3. Node

4. Application of KCL
I
1 = 2A
I
2 = 3A
I
3= 5A

5. I
1 = ?
I
2 = 150 mA
I
3= 250 mA
Problem w/KCL

6. KVL (Kirchhoff’s Voltage Law)
The sum of the potential
differences around a
closed loop equals zero.

7. Closed Loop #1

8. Closed Loop #2

9. Closed Loop #3

10. Closed Loop #4

11. Not Closed #1

12. Not Closed #2

13. What KVL Really Means
Sum of the Voltage drops
across resistors equals the
Supply Voltage in a Loop.

14. KVL #1

15. KVL #2