Changing voltage
Lesson 2 / 8
Lesson video
Lesson slides
Lesson details
Lesson outcome
Waxaan qeexi karaa oo aan dabaqi karaa xeerarka danabka (voltage) ee wareegga taxanaha ah.
Introduction
In this lesson: I can describe and apply the rules for voltage in a series circuit. The voltage of a battery measures the strength with which it can ‘push’ current around a circuit. The voltage of a component in an electric circuit measures the size of ‘push’ that is moving current through it.
Show transcript
Worksheet
not available yet
Quizzes
1. Which of the following is the voltage of each the cells shown?
- 20 V
- 3 V
- Correct answer:1.5 V
- 2 V
2. Which of the following is the voltage of the domestic mains electricity supply in the UK?
- 400 000 V
- 25 000 V
- Correct answer:230 V
- 9 V
- 1.5 V
3. Two different cells can be used to light a bulb. The cells have the same voltage, but one is larger than the other. Which two of the following statements are correct?
- The larger cell will light the bulb brighter.
- Correct answer:The larger cell will light the bulb for longer.
- Correct answer:Both cells will light the bulb at the same brightness.
- Both cells will light the bulb for the same time.
4. Which of the following components does the circuit symbol shown represent?
- resistor
- motor
- voltmeter
- ammeter
- Correct answer:buzzer
5. A voltmeter must be placed into a circuit in order to measure the voltage of a component. Which of the following statements is correct?
- Correct answer:The voltmeter must be placed across the component.
- The voltmeter must be placed in series with the component.
- The voltmeter must be placed before the component.
- The voltmeter must be placed after the component.
1. A 1.5 V cell is connected to a 6 V bulb in a series circuit. Which of the following statements about the circuit is correct?
- Correct answer:the bulb would be dim
- the bulb would be bright
- the bulb would blow
- the bulb wouldn't light
2. A battery is connected to four identical bulbs in a series circuit. Which of the following statements about the circuit is correct?
- The voltage across each of the bulbs will be different.
- The bulb nearest the positive terminal will be brightest.
- The bulb nearest the negative terminal will be brightest.
- Correct answer:he voltage across each of the bulbs will be the same.
3. The battery shown is made from three, identical 1.5 V cells that are aligned correctly. Which of the following is the total voltage supplied by the battery?
- 1.5 V
- 3.0 V
- Correct answer:4.5 V
- 6.0 V
4. The battery in the circuit shown is made from two, identical 3.0 V lithium ion cells. Which of the following is the reading that would be displayed on the voltmeter?
- 1 V
- 3 V
- Correct answer:6 V
- 9 V
5. The battery in the circuit shown is made from two, identical 1.5 V cells. Which of the following is the reading that would be displayed on the voltmeter?
- 1.5 V
- Correct answer:3.0 V
- 4.5 V
- 6.0 V
6. The bulbs in all of the lamps in the circuit shown are identical. Which of the following is the correct voltage across the bulb in lamp 1?
- 1.0 V
- Correct answer:2.0 V
- 4.0 V
- 8.0 V
What pupils see
The same lesson as a pupil sees it. You can set any section as work on its own.
- IntroductionPrepare
- Starter quizActivate · 5 questions
- Lesson videoLearn
- Exit quizCheck · 6 questions