Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN: 9780133923605
Author: Robert L. Boylestad
Publisher: PEARSON
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Transcribed Image Text:Ques 1(a). A copper wire has a resistance of 0.85Q at 20°C. What will be its resistance at 40°C?
The temperature coefficient of resistance of copper at 0°C is 0.004°℃.
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- The length and diameter of copper wire are found to be 100 and 0.002 m respectively consider that resistivity of the copper is 1.72 x 10'-8 ohm-m calculate the value of the resistancearrow_forwardOkumura model is applicable for distances of a) 1 m to 10 m b) 1 km to 100 km c) 100 km to 1000 km d) 10 km to 10000 kmarrow_forwardThe difference between insulator and semiconductor is a. wider gap between valence and conduction band b. the number of free electrons c. the atomic structure d. all of the abovearrow_forward
- In the circuit shown in Figure 2–41 (p. 94), the current I is 34.28 mA. What is the voltage drop across the diode? What is its dc resistance?arrow_forward3. The resistance of a copper wire at 70°C is 150 ohms. If the temperature coefficient of a copper at 0'C is 0.004261, What is the resistance at 20°C?arrow_forwardThe primary voltage on the transformer in Figure 2–46 (p. 96) is 120 V rms and NP : NS = 15:1. Diode voltage drops are 0.7 V. (a) What should be the value of RL if the average current in RL must be 0.5 A? (d) Is it alright to measure with an oscilloscope both the input and output waveforms at the same time in Figure 2-46? Why or why not?arrow_forward
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