Chapter 18: Problem 1
Review Questions Why are schematic diagrams useful?
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Key Concepts
These are the key concepts you need to understand to accurately answer the question.
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Chapter 18: Problem 1
Review Questions Why are schematic diagrams useful?
These are the key concepts you need to understand to accurately answer the question.
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Conceptual Questions A short circuit is a circuit containing a path of very low resistance in parallel with some other part of the circuit. Discuss the effect of a short circuit on the current within the portion of the circuit that has very low resistance.
You can obtain only four \(20.0 \Omega\) resistors from the stockroom. a. How can you achieve a resistance of \(50.0 \Omega\) under these circumstances? b. What can you do if you need a \(5.0 \Omega\) resistor?
A \(30.0 \Omega\) resistor is connected in parallel to a \(15.0 \Omega\) resistor. These are joined in series to a \(5.00 \Omega\) resistor and a source with a potential difference of \(30.0 \mathrm{V}\) a. Draw a schematic diagram for this circuit. b. Calculate the equivalent resistance. c. Calculate the current in each resistor. d. Calculate the potential difference across each resistor.
Review Questions Draw a circuit diagram for a circuit containing three \(5.0 \Omega\) resistors, a \(6.0 \mathrm{V}\) battery, and a switch.
Conceptual Questions Fuses protect electrical devices by opening a circuit if the current in the circuit is too high. Would a fuse work successfully if it were connected in parallel with the device that it is supposed to protect?
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