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FE Electrical and Computer Direct Current Circuits — practice questions

Explore 28 free Direct Current Circuits questions in FE Electrical and Computer Electrical Engineering. Open each question or exercise to read its content, reference answers and available explanation.

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Direct Current Circuits questions and exercises with answers

Showing questions 1–28 of 28.

A student is told that electromotive force is not really a force at all. The term survives for reasons that are:Read the answer and worked solution →With no current flowing, the emf of a source equals the work done on the charge per unit:Read the answer and worked solution →Work in joules divided by charge in coulombs gives the unit of emf. That unit is the:Read the answer and worked solution →A technician puts a meter directly across a battery's two terminals. The reading is the battery's:Read the answer and worked solution →Because the internal resistance sits in series with the load, it affects the current delivered and the:Read the answer and worked solution →Resistors carry the same current one after another along a single path. They are connected in:Read the answer and worked solution →Car headlights, radio and other systems are wired so each gets the full source voltage and works independently. They are wired in:Read the answer and worked solution →Three resistors are rewired from parallel into series across the same battery. The equivalent resistance becomes:Read the answer and worked solution →The current a battery supplies to a network depends on that network's:Read the answer and worked solution →At any junction in a circuit, the current entering must equal the current leaving. That statement is Kirchhoff's:Read the answer and worked solution →Around any closed path in a circuit, the algebraic sum of potential changes must be:Read the answer and worked solution →An engineer needs to read the potential difference across a resistor. The meter is connected:Read the answer and worked solution →To read the current through a component, the ammeter must instead be connected:Read the answer and worked solution →Because the circuit current runs through it, an ammeter usually carries built-in protection in the form of a:Read the answer and worked solution →A circuit containing both resistance and capacitance is known as an:Read the answer and worked solution →Household wiring limits excessive currents using circuit breakers and:Read the answer and worked solution →Modern household and industrial wiring uses a system of three wires: live, ground and:Read the answer and worked solution →The neutral wire is tied to ground at the source and at the user, which forces it to sit at:Read the answer and worked solution →In electrical safety, the term ground refers to a large sink or source of:Read the answer and worked solution →A shock hazard is described as occurring when an electric current passes through:Read the answer and worked solution →Catch the circuit termsRead the answer and worked solution →Pop the safety devicesRead the answer and worked solution →Run the circuit gatesRead the answer and worked solution →Slice the circuit wordsRead the answer and worked solution →Series or parallelRead the answer and worked solution →Sort the circuit wordsRead the answer and worked solution →Type the numberRead the answer and worked solution →Circuits bingoRead the answer and worked solution →

Worked practice questions

A student is told that electromotive force is not really a force at all. The term survives for reasons that are:

  1. Historical
  2. Magnetic
  3. Chemical
  4. Numerical
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Correct answer: A. Historical

1. The name is misleading. 2. Nothing about it is a force. 3. The reasons are historical. _Source: OpenStax University Physics Volume 2, Chapter 10, Direct-Current Circuits._

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With no current flowing, the emf of a source equals the work done on the charge per unit:

  1. Second
  2. Charge
  3. Metre
  4. Kelvin
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Correct answer: B. Charge

1. Work is divided by something. 2. The result is measured in volts. 3. It is per unit charge. _Source: OpenStax University Physics Volume 2, Chapter 10, Direct-Current Circuits._

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Work in joules divided by charge in coulombs gives the unit of emf. That unit is the:

  1. The volt unit
  2. The watt unit
  3. The ampere
  4. The ohm unit
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Correct answer: A. The volt unit

1. Joules per coulomb is the ratio. 2. It is the everyday unit of voltage. 3. It is the volt unit itself. _Source: OpenStax University Physics Volume 2, Chapter 10, Direct-Current Circuits._

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