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प्रश्न
List the names of three electrical gadgets used in your house. Write their power, voltage rating and approximate time for which each one is used in a day. Hence, find the electrical energy consumed by each in a day.
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उत्तर
| Appliance | Power (in watts) |
Voltage (in volts) |
Time (hours) |
Electrical energy (E = p × t) |
| Fluorescent tube | 40 | 220 | 12 | 0.48 kWh |
| Television set | 120 | 220 | 4 | 0.48 kWh |
| Refrigerator | 150 | 220 | 24 | 3.6 kWh |
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