Class 7 Exam > Class 7 Videos > Science (Curiosity) Class 7 - New NCERT > Electricity: Circuits and their Components
Electricity: Circuits and their Components Video Lecture | Science (Curiosity) Class 7 - New NCERT
FAQs on Electricity: Circuits and their Components Video Lecture - Science (Curiosity) Class 7 - New NCERT
| 1. What are the basic components of an electric circuit? |  |
Ans. The basic components of an electric circuit include a power source (like a battery), conductors (wires), a load (like a light bulb or motor), and a switch. The power source provides the voltage, the conductors allow the flow of current, the load uses the electricity to perform work, and the switch controls the flow of current in the circuit.
| 2. How does a series circuit differ from a parallel circuit? | |
Ans. In a series circuit, all components are connected end-to-end, forming a single path for current to flow. If one component fails, the entire circuit is broken. In a parallel circuit, components are connected across common points or junctions, providing multiple paths for current. If one component fails, the others can still operate.
| 3. What is the role of a switch in an electric circuit? | |
Ans. A switch is a device that can open or close a circuit, controlling the flow of electricity. When the switch is closed, the circuit is complete, allowing current to flow. When the switch is open, the circuit is incomplete, and current stops flowing. This allows users to control devices connected to the circuit easily.
| 4. What is the importance of conductors in an electric circuit? | |
Ans. Conductors are materials that allow electric current to flow through them easily. In an electric circuit, conductors (usually copper or aluminum wires) connect the power source to the load, facilitating the movement of electrons. Without conductors, electricity would not be able to travel through the circuit.
| 5. How can we ensure safety when working with electric circuits? | |
Ans. To ensure safety when working with electric circuits, always turn off the power before making any connections or adjustments. Use insulated tools and wear rubber-soled shoes to prevent electric shock. Avoid working with wet hands or in wet conditions, and always follow safety guidelines and instructions to minimize risks.
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