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Making parallel circuits

Lesson 7 / 9

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Lesson outcome

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Introduction

In this lesson: I can use circuit diagrams to build parallel circuits and draw circuit diagrams of parallel circuits. A parallel circuit is a circuit with more than one complete loop, from one end of a battery to the other end. A circuit is built systematically following a circuit diagram, round in one direction, starting from any point.

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A parallel circuit is a circuit with more than one complete loop, from one end of a battery to the other end. A circuit is built systematically following a circuit diagram, round in one direction, starting from any point. A parallel circuit is built systematically, completing each loop of the circuit in turn. A circuit diagram is drawn systematically, following each loop round and completing each one in turn. Wires in a circuit diagram are drawn with a ruler for clarity, with no tiny gaps that would break the circuit.

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Quizzes

  1. 1. Which of the following statements about series circuits is correct?

    • A series circuit contains junctions.
    • A series circuit has different loops.
    • Correct answer:The current is the same everywhere in a series circuit.
    • The current can take different paths in a series circuit.
  2. 2. Which of the following resistances is the total resistance of the combination of resistors shown?

    • 1 $$\Omega$$
    • 2 $$\Omega$$
    • 3 $$\Omega$$
    • 4 $$\Omega$$
    • Correct answer:5 $$\Omega$$
  3. 3. A 20 cm wire has a resistance of 60 $$\Omega$$. Which of the following lengths of wire would have a resistance of 15 $$\Omega$$?

    • Correct answer:5 cm
    • 20 cm
    • 40 cm
    • 80 cm
  4. 4. Which of the following statements describes how an ammeter should be connected to measure the current through a component?

    • Correct answer:In series with the component.
    • In parallel with the component.
    • Either in series or in parallel with the component.
  5. 5. Which of the following statements describes how a voltmeter should be connected to measure the voltage across a component?

    • In series with the component.
    • Correct answer:In parallel with the component.
    • Either in series or in parallel with the component.
  6. 6. Which of the following rules are important when drawing circuit diagrams?

    • Correct answer:There are no small gaps between wires or components.
    • Correct answer:Standard circuit symbols are used.
    • Correct answer:Wires are drawn using a ruler.
    • The circuit diagram is symmetrical.
  1. 1. Which of the following statements about parallel circuits are correct?

    • Correct answer:A parallel circuit contains junctions.
    • Correct answer:A parallel circuit has different loops.
    • All of the current passes through all of the components in a parallel circuit.
    • The current is the same everywhere in a parallel circuit.
  2. 2. Which of the following rules are **not** important when building a circuit from a circuit diagram?

    • The number of components must match.
    • The number of loops must match.
    • The components on each loop must match.
    • Correct answer:The positions of the components on each loop must match.
  3. 3. A pupil has drawn a circuit diagram of a circuit they used to measure the voltage across a lamp. Which of the following errors have they made when constructing the circuit diagram shown?

    • They have used an incorrect symbol for the cell.
    • Correct answer:There is a gap at the positive terminal of the cell.
    • Correct answer:They have used an incorrect symbol for the one of the lamps.
    • Correct answer:The voltmeter is connected in series.
  4. 4. Which of the circuits shown, A, B, C, or D, is the odd one out?

    • A
    • Correct answer:B
    • C
    • D
  5. 5. Which of the following statements about voltage and current are correct?

    • Correct answer:voltage = size of the 'push' on charges; current = rate of flow of charge
    • voltage = rate of flow of charge; current = size of the 'push' on charges
    • voltage = how hard it is for charge to flow; current = rate of flow of charge
    • voltage = number of charges in circuit; current = how fast the charges flow
  6. 6. Which of the following statements about the two circuits shown are correct?

    • Correct answer:Both circuits are parallel circuits.
    • Both circuits are series circuits.
    • Correct answer:Both circuits are the same circuit.
    • One circuit is a series circuit and the other is a parallel circuit.

What pupils see

The same lesson as a pupil sees it. You can set any section as work on its own.

  • IntroductionPrepare
  • Starter quizActivate · 6 questions
  • Lesson videoLearn
  • Exit quizCheck · 6 questions
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