Loops of a parallel circuit
Lesson 4 / 9
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Waxaan u qaybin karaa wareegga barbar socda (parallel) qaybo taxan (series) oo isku xiran.
Introduction
In this lesson: I can divide a parallel circuit into a set of nested series circuits. In a parallel circuit, each loop can be traced from one end of the cell or battery to the other end. Each loop in a parallel circuit is equivalent to a series circuit connected to the same cell or battery.
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Quizzes
1. Which of the following statements about the electrical leads in laboratory circuits is correct?
- The leads oppose the flow of current.
- Unconnected leads have a voltage across them.
- Correct answer:The leads have negligible resistance.
2. Which of the following is the more formal term for voltage?
- rational difference
- potential reference
- Correct answer:potential difference
- rational reference
3. Which of the following is the correct way to connect a voltmeter and an ammeter in a circuit?
- Correct answer:Connect the voltmeter in parallel and the ammeter in series.
- Connect the voltmeter in series and the ammeter in parallel.
- Connect both the voltmeter and the ammeter in parallel.
- Connect both the voltmeter and the ammeter in series.
4. Which of the following statements about the voltage in the branches of the parallel circuit shown is correct?
- The branch with the single lamp has a higher voltage.
- The branch with two lamps has a higher voltage.
- Correct answer:Both branches have the same voltage.
- The branches with lamps have a lower voltage than the cell.
5. All of the lamps in the circuit shown are identical. What is the voltage across lamp 3?
- 1.0 V
- Correct answer:2.0 V
- 3.0 V
- 4.0 V
6. What will the reading be on voltmeters 1 and 2 in the circuit shown?
- voltmeter 1: 3.0 V, voltmeter 2: 3.0 V
- voltmeter 1: 1.5 V, voltmeter 2: 1.5 V
- Correct answer:voltmeter 1: 3.0 V, voltmeter 2: 0.0 V
- voltmeter 1: 0.0 V, voltmeter 2: 3.0 V
1. Which of the following statements about circuits are correct?
- Correct answer:A parallel circuit can be made up of separate series circuits.
- A series circuit has multiple loops.
- Correct answer:A parallel circuit has junctions.
- A series circuit has different current values at different points in it.
2. Which of the following circuits is the odd one out?
- Correct answer:
3. All of the lamps in the circuit shown are identical. Which of the following statements is correct?
- The lamps will be different brightnesses.
- Correct answer:The lamps have the same voltage.
- The lamp nearest the cell will get the highest voltage.
- The current reduces through each lamp with distance from the cell.
4. What is the voltage of a battery of four 1.5 V cells, connected in the same direction in series?
- 1.5 V
- 3.0 V
- 4.5 V
- Correct answer:6.0 V
5. Which of the following can be used to help explain potential difference?
- Correct answer:energy in the gravitational store
- energy in the elastic store
- energy in the chemical store
6. Which of the following statements about connecting identical cells in parallel is correct?
- The voltage increases.
- They can 'push' current harder.
- Correct answer:They can light a lamp for longer.
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