Basic Electric Circuits Tutorial 2

Basic Electric Circuits – © 2020 Mouli Sankaran Email: mouli.sankaran@yahoo.com 2
Tutorial 2: Focus
 Power Generated or Absorbed
 Problem using Conservation of Energy
 KCL Problems

T2_Problem_1
 In the figure below are the elements supplying or
absorbing power?
 E1:
 E2:
E1 E2
Supplying
Absorbing
(-16 W)
(20 W)
-10 V4 V

T2_Problem_2
 Compute the power being absorbed by the circuit
element (a):
 Compute the power being absorbed by (b):
 Determine the power being delivered at t = 5 ms
(c):
880 mW
6.65 W
-15.53 W

T2_Problem_3
 Compute the power supplied by Element 1.
◦ Total power supplied = P10V + P1 + P18V
◦ = - (10 Ix) – (2 Ix) – (18*2) = -12 Ix - 36
◦ Total power absorbed = P2 + PIx
◦ = 4* Ix + 20 * Ix = 24 Ix
◦ Total power supplied + Total power absorbed = 0
◦ -12 Ix – 36+ 24Ix= 0
◦ 36 = 12 Ix
◦ Ix = 3 A
= 8 A
Result:
Power supplied by
Element 1 = 2 * Ix
= - (2 * 3)
= -6W
Conservation of
Energy
20 V
- +
18 V10 V
2 V

T2_Problem_4
 (a) Find I1 :
 (b) Find I1 : I2 :
6 mA
Note: This problem is E 2.5 on
page 35, Figure E 2.5 in the Ref 2
book (by Irwin)
8 mA 5 mA

T2_Problem_5
 How many nodes and braches are there?
 Find RA =
Note: This is Practice 3.1 on page 42, Figure 3.4 in the Ref 1 book (by Hayt)
1 Ω
8 + 13 = iRA + ix
Total current entering the node A = Total current leaving the node A
= 3A
8 A
Nodes = 3
Branches = 5
18 V
Node A
At Node A:
iRA
21 = iRA + 3
iRA = 18
RA = VRA / iRA = 18/18
RA = 1 ΩGND or Reference Node

References
Ref 1 Ref 2

Basic Electric Circuits Tutorial 2

More Related Content

Similar to Basic Electric Circuits Tutorial 2 (20)

More from International Institute of Information Technology - Bangalore (20)

Recently uploaded (20)

Basic Electric Circuits Tutorial 2