(a) State the relationship between the power for a resistor and the resistance of that resistor, and calculate the power for a resistor of 1 k? with a 12 V power supply connected across it. Is the power for a resistor positive or negative in the passive reference configuration? (b) For a cylindrical resistor, state the relationship between its resistance and its dimensions, A (the cross-sectional area) and L (the length), and explain how resistance can be used to sense strain.

(a) State the relationship between the power for a resistor and the resistance of that resistor, and calculate the power for a resistor of 1 k? with a 12 V power supply connected across it. Is the power for a resistor positive or negative in the passive reference configuration? (b) For a cylindrical resistor, state the relationship between its resistance and its dimensions, A (the cross-sectional area) and L (the length), and explain how resistance can be used to sense strain.

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter7: Parallel Circuits

Section: Chapter Questions

Problem 4PP: Using the rules for parallel circuits and Ohmslaw, solve for the missing values....

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