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AP Physics 2 Circuits and DC Instruments — practice questions

Explore 23 free Circuits and DC Instruments questions in AP Physics 2 Physics. Open each question or exercise to read its content, reference answers and available explanation.

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Circuits and DC Instruments questions and exercises with answers

Showing questions 1–23 of 23.

The same current flows through each resistor when the resistors are connected:Read the answer and worked solution →Kirchhoff's loop rule is described as expressing the conservation of:Read the answer and worked solution →The loop rule specifies that the potential around any closed circuit path must be:Read the answer and worked solution →The junction rule equates the sum of all currents entering a junction to the sum of all currents:Read the answer and worked solution →Voltmeters are described as measuring which quantity?Read the answer and worked solution →Ammeters are described as measuring which quantity?Read the answer and worked solution →Voltmeters are connected how, relative to the device whose voltage is measured?Read the answer and worked solution →Ammeters are connected how, relative to the device whose current is measured?Read the answer and worked solution →When resistors are connected in parallel, the total resistance is:Read the answer and worked solution →Connecting resistors in parallel makes the current drawn from the source:Read the answer and worked solution →Combinations of series and parallel resistors can be reduced to a single:Read the answer and worked solution →All voltage sources are described as having two fundamental parts: an internal resistance and a:Read the answer and worked solution →The name given to the driving influence of a voltage source is:Read the answer and worked solution →The voltage measured across the output terminals of a source is called the:Read the answer and worked solution →A battery's output voltage falls when it is depleted or overloaded because of its:Read the answer and worked solution →Power dissipated by each resistor is described as considerably higher in parallel than in series when connected to:Read the answer and worked solution →Kirchhoff's two rules together encode the conservation of which two quantities?Read the answer and worked solution →An ammeter wired in parallel rather than in series would fail to work because current must:Read the answer and worked solution →Pull the rope to series or parallelRead the answer and worked solution →Sort the circuit rulesRead the answer and worked solution →Stack the circuit factsRead the answer and worked solution →Match each circuit termRead the answer and worked solution →Complete the circuit rulesRead the answer and worked solution →

Worked practice questions

The same current flows through each resistor when the resistors are connected:

  1. Wired in series
  2. Wired in parallel
  3. At a junction
  4. In a capacitor
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Correct answer: A. Wired in series

1. Series and parallel differ in what stays the same across components. 2. Resistors can be wired in series or in parallel. 3. The same current flows through each resistor in series. 4. Parallel resistors instead share the same voltage. _Source: OpenStax College Physics for AP Courses 2e (CC BY 4.0), Ch 21 'Circuits and DC Instruments', sections 21.1-21.6_

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Kirchhoff's loop rule is described as expressing the conservation of:

  1. Of momentum
  2. Of the energy
  3. Of the charge
  4. Of the mass
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Correct answer: B. Of the energy

1. Each Kirchhoff rule encodes a conservation law. 2. There are two Kirchhoff rules for circuits. 3. Kirchhoff's loop rule describes conservation of energy in electrical circuits. 4. The junction rule handles charge instead. _Source: OpenStax College Physics for AP Courses 2e (CC BY 4.0), Ch 21 'Circuits and DC Instruments', sections 21.1-21.6_

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The loop rule specifies that the potential around any closed circuit path must be:

  1. Exactly zero
  2. At a maximum
  3. Negative
  4. Twice as big
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Correct answer: A. Exactly zero

1. The loop rule is a statement about a full circuit loop. 2. Energy conservation is discussed in terms of the loop rule. 3. The rule specifies that the potential around any closed circuit path must be zero. 4. Rises and drops around the loop must cancel. _Source: OpenStax College Physics for AP Courses 2e (CC BY 4.0), Ch 21 'Circuits and DC Instruments', sections 21.1-21.6_

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