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Ohm’s Law, KCL and KVL-Basic Electronics-Assignment, Exercises of Basic Electronics

Bengal Engineering & Science UniversityBasic Electronics

Dr. Ajitesh Desai assigned this task for Basic Electronics course at Bengal Engineering and Science University. It includes: Ohms, Law, KCL, KVL, Resistance, Tolerance, Voltage, Drop, Current, Divider

Typology: Exercises

2011/2012

Uploaded on 07/19/2012

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Assignment#01(BSME)
ElectricalEngineering
SubmissionDate:Nov01,2010
ResistorBasic,TemperatureEffectandWireTable
1. Use Table 3–2 to find the resistance of 250 m of AWG 8 and AWG 2 solid copper
conductors. Compare the diameters and the resistances of the wires.
2. If AWG 8 is rated at a maximum of 40 A, how much current could AWG 2 handle safely?
3. Determine the diameter in inches and in millimeters of circular cables having cross-
sectional areas as given below: (Assume the cables to be solid conductors.) a. 250 CM
b. 1000 CM c. 250 MCM d. 750 MCM
Ohm’sLaw
4. If I = 36 mA when E =12 V, what is I if the 12-V source is
a. replaced by an 18-V source?
b. replaced by a 4-V source?
5. A 20-V source is applied to a resistor with color bands brown, black, red, and silver
a. Compute the nominal current in the circuit.
b. Compute the minimum and maximum currents based on the tolerance of the
resistor.
6. A 2.2-k Ω resistor with a tolerance of +5% is connected to a 12-V dc source. What is the
possible range of power dissipated by the resistor?
7. Determine which, if any, of the following resistors may have been damaged by
overheating. Justify your answer.
a. 560 Ω, 1⁄2W, with 75 V across it.
b. 3 Ω, 20 W, with 4 A through it.
c. 1⁄4W, with 0.25 mA through it and 40 V across it.
SeriesCircuitsandKVL
8. Solve for the unknown voltages in the circuit of Figure.
9. For the circuits shown in Figure 5–65, determine the total resistance, RT, and the
current, I.
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Assignment # 01 (BSME)

Electrical Engineering

Submission Date: Nov 01, 2010

Resistor Basic, Temperature Effect and Wire Table

  1. Use Table 3–2 to find the resistance of 250 m of AWG 8 and AWG 2 solid copper conductors. Compare the diameters and the resistances of the wires.
  2. If AWG 8 is rated at a maximum of 40 A, how much current could AWG 2 handle safely?
  3. Determine the diameter in inches and in millimeters of circular cables having cross- sectional areas as given below: (Assume the cables to be solid conductors.) a. 250 CM b. 1000 CM c. 250 MCM d. 750 MCM Ohm’s Law
  4. If I = 36 mA when E =12 V, what is I if the 12-V source is a. replaced by an 18-V source?

b. replaced by a 4-V source?

  1. A 20-V source is applied to a resistor with color bands brown, black, red, and silver a. Compute the nominal current in the circuit.

b. Compute the minimum and maximum currents based on the tolerance of the resistor.

  1. A 2.2-k Ω resistor with a tolerance of +5% is connected to a 12-V dc source. What is the possible range of power dissipated by the resistor?
  2. Determine which, if any, of the following resistors may have been damaged by overheating. Justify your answer. a. 560 Ω, 1⁄2W, with 75 V across it.

b. 3 Ω, 20 W, with 4 A through it.

c. 1⁄4W, with 0.25 mA through it and 40 V across it.

Series Circuits and KVL

  1. Solve for the unknown voltages in the circuit of Figure.
  2. For the circuits shown in Figure 5–65, determine the total resistance, RT, and the current, I.
  1. Refer to the circuit of Figure below. a. Use Kirchhoff’s voltage law to find the voltage drops across R2 and R3.

b. Determine the magnitude of the current, I.

c. Solve for the unknown resistance, R1.

  1. Repeat Problem 13 for the circuit of Figure below.

Parallel Circuits and KCL

  1. Find each of the unknown currents in the networks of Figure below.