Current Electricity Exe-9C Short Ans Concise Physics ICSE Class 9 Selina Publishers. Answer of Short Question Type based on Effiecient Uses of Energy. Visit official Website CISCE for detail information about ICSE Board Class-9.
Current Electricity Exe-9C 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 | Effiecient Uses of Energy |
| Topics | Solution of Short Answer Question |
| Academic Session | 2024-2025 |
Effiecient Uses of Energy
SHORT ANSWER TYPE: Current Electricity Exe-9C Short Ans Concise Physics ICSE Class 9 Selina Publishers
Question-1: State two ways to save energy.
Answer-.
1). To save the most energy, switch off the power point rather than leave appliances on standby.
2).Turn off your heater, cooling units and appliances when you go to bed or leave the house.
Question-2: How does proper insulation of home save energy ?
Answer-By properly insulating a home, it is possible to maintain a comfortable temperature inside. It will reduce the cost of heating devices in winter and cooling devices in summer.
Question-3: How is CFL better than a usual bulb?
Answer- CFL (Compact fluorescent lamp) produces very less amount of heat energy and thus reduces the energy wastage. That’s why CFL are more eco-friendly.
Question-4: What is indicated by the different number of stars on an electric appliance ?
Answer- number of stars on an electric appliance indicate how energy efficient they are. More stars on an electric appliance, more energy efficient. less star means less energy efficient.
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