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    Tutorial 3 PDF

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    This document provides 10 practice problems for using Kirchhoff's laws to analyze electrical circuits. The problems involve determining unknown currents, voltages, powers and resistances. Answers are provided for each problem. Kirchhoff's laws are circuit analysis tools used to solve networks of electrical components by relating the voltages and currents in the loops and junctions of a circuit.

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    Tutorial 3 PDF

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    santo
    122 views2 pages
    This document provides 10 practice problems for using Kirchhoff's laws to analyze electrical circuits. The problems involve determining unknown currents, voltages, powers and resistances. Answers are provided for each problem. Kirchhoff's laws are circuit analysis tools used to solve networks of electrical components by relating the voltages and currents in the loops and junctions of a circuit.

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    This document provides 10 practice problems for using Kirchhoff's laws to analyze electrical circuits. The problems involve determining unknown currents, voltages, powers and resistances. Answers are provided for each problem. Kirchhoff's laws are circuit analysis tools used to solve networks of electrical components by relating the voltages and currents in the loops and junctions of a circuit.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    122 views2 pages

    Tutorial 3 PDF

    Uploaded by

    santo
    This document provides 10 practice problems for using Kirchhoff's laws to analyze electrical circuits. The problems involve determining unknown currents, voltages, powers and resistances. Answers are provided for each problem. Kirchhoff's laws are circuit analysis tools used to solve networks of electrical components by relating the voltages and currents in the loops and junctions of a circuit.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
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    Tribhuvan University

    Institute of Engineering
    Pulchowk Campus
    Department of Electrical Engineering
    Basic Electrical Engineering
    Tutorial 3

    Use Kirchhoff’s Laws to solve the following problems:

    1. In the circuit of Figure 1, find the currents in the resistors R1, R2 and R3. [Ans:
    10/11 A, 3/11 A, 13/11 A]

    Figure 1 Figure 2

    2. Find the currents in resistors R1 and R3 (see Figure 2). [Ans: 6 A, 4 A]


    3. In the circuit shown in Figure 3, determine the magnitude and direction of current
    in each battery. [Ans: 8A, 4A, 12A]

    Figure 3 Figure 4

    4. In the unbalanced Wheatstone bridge shown in Figure 4, the galvanometer has


    resistance of 4 Ω. Find (i) the current through the galvanometer (ii) currents in the
    four branches of the bridge (iii) potential difference across AC and (iv) effective
    resistance between A and C. [Ans: 2/67 A, IAD = 46/67 A, IAB = 96/67 A, IBC
    =94/67 A, ICD = 48/67 A, VAC = 528/67 V, RAC = 3.72 Ω]

    5. In Figure 5, find “V” and the magnitude and direction of the unknown currents in
    the branches XN, YN and ZN. [Ans: 8.42 V, 1.684 A, 4.21 A, 2.1 A]
    Figure 5 Figure 6

    6. Find Vs in Figure 6 using Kirchhoff laws. [Ans: 41 V]

    7. Find the current and power delivered by each battery in the circuit shown in
    Figure 7. [Ans: 0 A, 0.667 A, 0W, 1.33 W]

    RΩ

    2Ω 7Ω 3Ω
    8Ω

    Vs 1A 1A
    1Ω

    Figure 7 Figure 8

    8. Find the values of R and Vs in Figure 8. Also find the power supplied by the
    source. [Ans: 2 Ω, 12 V]

    9. Compute the value of battery current I in Figure 9. [Ans: 6 A]

    10. A battery of unknown e.m.f. is connected across resistances as shown in Figure


    10. The voltage drop across the 8 Ω resistor is 20 V. What will be the current
    reading in the ammeter? What is the e.m.f. of the battery? [Ans: 0.7 A, 67.3 V]

    Figure 9 Figure 10

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