Current Electricity Exe-9C Very Short Ans Concise Physics ICSE Class 9 Selina Publishers Solutions. Answer of questions based on Efficient Uses of Energy given in latest textbook applicable in 2024-25 academic session. Visit official Website CISCE for detail information about ICSE Board Class-9 Physics.
Current Electricity Exe-9C Very Short Ans Concise Physics ICSE Class 9 Selina Publishers
| Board | ICSE |
| Class | 9 |
| Subject | Physics |
| Writer / Publication | Concise Selina Publishers |
| Chapter-9 | Current Electricity |
| Exe-9C | Efficient Uses of Energy |
| Topics | Solution of Very Short Ans |
| Academic Session | 2024-2025 |
Exe-9C Efficient Uses of Energy
VERY SHORT ANSWER TYPE
Question-1: State the first traditional electric device to be used for home lighting.
Answer-Incandescent electric lamp .
Question-2: Which of the following devices is most efficient for lighting purpose: LED, CFL, Fluorescent tube light, Electric bulb.
Answer- For lighting purpose, LED or light emitting diode is the most efficient.
Extra Imp Questions
Que- What uses energy efficiency?
Ans: more energy-efficient cars, trucks and aircraft reduce oil demand in the transport sector; more efficient steel, cement and chemical manufacturing reduces fossil fuel use in industry; and better insulation and more efficient appliances reduce the electricity and direct fossil fuel consumption of buildings.
Que- What is the efficient use of resources energy?
Ans: Energy resources should be used efficiently and effectively in order to ensure the stability of energy security, reduce the energy share of the gross domestic product, strengthen the competitiveness of the country’s economy, protect the environment and reduce waste and excess costs on utilities
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