Year 4 Exam > Year 4 Notes > Year 4 Science > How can you change a circuit?
How can you change a circuit? | Year 4 Science PDF Download
Electrical components
- A circuit always requires a power source, like a battery, with wires connected to both the positive (+) and negative (-) terminals.
- A circuit can also include other electrical components, such as wires, bulbs, buzzers, or motors, to allow electricity to flow through.
- Electricity will only flow through a circuit that is complete. A switch can be used in a circuit to create a gap, which allows the power to be turned on and off.
- When a switch is open (off), there is a gap in the circuit, and electricity cannot flow through it. When a switch is closed (on), the circuit is complete, and electricity can flow through it.
Question for How can you change a circuit?Try yourself: Which electrical component is used to create a gap in a circuit to allow the power to be turned on and off?View Solution
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FAQs on How can you change a circuit? - Year 4 Science
| 1. How can you stay safe around electricity? |  |
Ans. To stay safe around electricity, always unplug appliances before cleaning or repairing them, never touch electrical appliances with wet hands, avoid overloading sockets, and ensure that all electrical work is carried out by a qualified electrician.
| 2. What should you do in case of an electrical emergency? | |
Ans. In case of an electrical emergency, such as a fire or electric shock, immediately turn off the power at the mains, call emergency services, and do not attempt to touch the person receiving the electric shock.
| 3. How can you prevent electrical accidents in the home? | |
Ans. To prevent electrical accidents in the home, regularly check for frayed wires or damaged cords, avoid running electrical cords under carpets or rugs, and keep electrical appliances away from water sources.
| 4. Why is it important to use circuit breakers in the home? | |
Ans. Circuit breakers are important in the home as they help protect against electrical overloads and short circuits, which can lead to fires and other electrical hazards.
| 5. How often should electrical appliances be inspected for safety? | |
Ans. Electrical appliances should be inspected for safety at least once a year by a qualified electrician to ensure they are in good working condition and do not pose any risks.
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Dec 22, 2024 Last updated |
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