### Electrical Engineering Assignment

Added on - 21 Apr 2020

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Engineering Science Electrical1A CALCULATION PAPER ON ENGINEERING SCIENCE ELECTRICALA Calculation Paper on Circuits ByStudent’s NameName of the ProfessorInstitutional AffiliationCity/StateYear/Month/Day

Engineering Science Electrical2QUESTION 1Use Kirchhoff’s Law to find the value of currents Ix, Iy, Izand the voltages Vpand Vqin Fig1a and 1b:By the use of Kirchhoff’s current law which states that the total current entering a circuitjunction is exactly equal to the total current leaving the same junction:6.3A + Iy+ 1.7A = 3.8A8 + Iy= 3.8Iy= -4.2A5.9A + 1.7A = 2.4A + Ix7.6A = 2.4A + IxIx= 5.2A4.1A = Iz+ Ix + Iy4.1 = Iz+ 5.2 + -4.24.1 = Iz+ 1Iz= 3.1A

Engineering Science Electrical3By the use of the Kirchhoff’s voltage law which states that the algebraic sum of all thevoltages around any closed loop in a circuit is equal to zero, the figure above can be dividedinto two loops:[ CITATION Ros14 \l 2057 ]Loop 1Vp– 2.1V + -2.4 + 9.8V + - 5V + - 1.9V = 0Vp+ 9.8V = 2.1V + 2.4V + 5V + 1.9VVp + 9.8V = 11.4VVp = 1.6VLoop 2Vq+ 9.8V + 0.5V + -5V – 1.2V -2.7V = 0VVq+ 9.8V + 0.5V = 5V + 1.2V + 2.7VVq + 10.3V = 8.9Vq = -1.4V

Engineering Science Electrical4QUESTION 2Using loop analysis determine the current in each resistor in fig 2When 12V supply is open circuit, then the circuit will be as shown in the figure below:For loop 1: 18V = 12I1+ 3I3When 18V supply is open circuited as shown above:12V = 6I2+ 3I3..................................................(i)But: I1+I2= I3.............................................. (ii)18V = 12I1+ 3I3.............................................. (iii)

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