27. Resistors & DC Circuits

Intro to Current

Multiple Choice
Intro to Current: In basic circuit terminology, any device that uses electric current to perform work (such as converting electrical energy to light, heat, or motion) is called a:
Multiple Choice
Which of the following terms best describes an electrical current ( $I$ )?
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Multiple Choice
A circuit consists of a battery with emf $𝐸$ and two resistors, $R = 2 Ω$ and $R = 4 Ω$ , connected in series. If the emf of the battery is $12 V$ , what is the current through the battery?
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Multiple Choice
In an introductory DC circuit, which type of circuit prevents the flow of current because the conducting path is broken?
Multiple Choice
A wire delivers $12.0 C$ of charge in $4.0 s$ . What is the current in the wire?
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Multiple Choice
In introductory circuit analysis, which American Wire Gauge (AWG) wire can typically carry the most current (assuming the same material and similar insulation/ambient conditions)?
Multiple Choice
In a series $L C$ circuit, which of the following statements about the electric current is correct?
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Multiple Choice
In introductory electricity, what term describes the complete closed path along which an electric current flows?
Multiple Choice
A simple circuit consists of a $12 V$ battery connected in series with a $4 Ω$ resistor. What is the current in this circuit?
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Multiple Choice
A total of $600 C$ of charge passes through a flashlight in $0.500 h$ . What is the average current?
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Multiple Choice
In an introductory circuits context, which device restricts electric current flow to a single direction?
Multiple Choice
If the voltage across a circuit remains constant ( $V =constant$ ), how does the current ( $I$ ) change when the resistance ( $R$ ) is doubled?
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Multiple Choice
Topic: Intro to Current. Two cylindrical copper wires have the same length but different diameters. Wire A has diameter $d_{A}$ and Wire B has diameter $d_{B}$ , with $d_{B} > d_{A}$ . If the same potential difference $V$ is applied across each wire, which wire can carry the higher current?
Multiple Choice
In introductory electricity, what SI unit is used to measure the strength of an electric current?
Multiple Choice
Which of the following best defines electric current?
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