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A water heater marked 2kw, 220v is connected to 220 v supply how long will it taketo heat 20 kg of water from 10degree c to 30degree c ? Assume that all the heat is taken up by the water . Take specific heat of water =4209J kg^–1degree c^–1. Plz tell the ans if you are able to i m not able to slove this . try to do this in easy way.?
Most Upvoted Answer
A water heater marked 2kw, 220v is connected to 220 v supply how long ...
P=2KW,
c=4.186kj/kg,
m=20kg,
∆T=10-30degrees,
let the time taken=t,
p.t=mc∆T,.
2t=20×4.186(30-10),
t=1674.2/2=837.2seconds
c=4.186kj/kg,
m=20kg,
∆T=10-30degrees,
let the time taken=t,
p.t=mc∆T,.
2t=20×4.186(30-10),
t=1674.2/2=837.2seconds
Community Answer
A water heater marked 2kw, 220v is connected to 220 v supply how long ...
Given Data
- Power of the heater: 2 kW (or 2000 W)
- Voltage: 220 V
- Mass of water: 20 kg
- Initial temperature (Ti): 10°C
- Final temperature (Tf): 30°C
- Specific heat of water: 4209 J/kg°C
Calculating the Energy Required
1. Temperature Change (ΔT)
- ΔT = Tf - Ti = 30°C - 10°C = 20°C
2. Energy Required (Q)
- Q = mass × specific heat × ΔT
- Q = 20 kg × 4209 J/kg°C × 20°C
- Q = 20 × 4209 × 20
- Q = 1683600 J
Calculating Time Required
3. Power (P)
- Power is the rate of energy transfer. In this case, P = 2000 W = 2000 J/s.
4. Time (t)
- Time can be calculated using the formula: t = Q / P
- t = 1683600 J / 2000 J/s
- t = 841.8 seconds
Convert Time to Minutes
5. Minutes
- 841.8 seconds ≈ 14.03 minutes
Conclusion
- The time required to heat 20 kg of water from 10°C to 30°C using a 2 kW heater is approximately 14 minutes.
- Power of the heater: 2 kW (or 2000 W)
- Voltage: 220 V
- Mass of water: 20 kg
- Initial temperature (Ti): 10°C
- Final temperature (Tf): 30°C
- Specific heat of water: 4209 J/kg°C
Calculating the Energy Required
1. Temperature Change (ΔT)
- ΔT = Tf - Ti = 30°C - 10°C = 20°C
2. Energy Required (Q)
- Q = mass × specific heat × ΔT
- Q = 20 kg × 4209 J/kg°C × 20°C
- Q = 20 × 4209 × 20
- Q = 1683600 J
Calculating Time Required
3. Power (P)
- Power is the rate of energy transfer. In this case, P = 2000 W = 2000 J/s.
4. Time (t)
- Time can be calculated using the formula: t = Q / P
- t = 1683600 J / 2000 J/s
- t = 841.8 seconds
Convert Time to Minutes
5. Minutes
- 841.8 seconds ≈ 14.03 minutes
Conclusion
- The time required to heat 20 kg of water from 10°C to 30°C using a 2 kW heater is approximately 14 minutes.
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A water heater marked 2kw, 220v is connected to 220 v supply how long will it taketo heat 20 kg of water from 10degree c to 30degree c ? Assume that all the heat is taken up by the water . Take specific heat of water =4209J kg^–1degree c^–1. Plz tell the ans if you are able to i m not able to slove this . try to do this in easy way.?
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A water heater marked 2kw, 220v is connected to 220 v supply how long will it taketo heat 20 kg of water from 10degree c to 30degree c ? Assume that all the heat is taken up by the water . Take specific heat of water =4209J kg^–1degree c^–1. Plz tell the ans if you are able to i m not able to slove this . try to do this in easy way.? for Class 10 2024 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about A water heater marked 2kw, 220v is connected to 220 v supply how long will it taketo heat 20 kg of water from 10degree c to 30degree c ? Assume that all the heat is taken up by the water . Take specific heat of water =4209J kg^–1degree c^–1. Plz tell the ans if you are able to i m not able to slove this . try to do this in easy way.? covers all topics & solutions for Class 10 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A water heater marked 2kw, 220v is connected to 220 v supply how long will it taketo heat 20 kg of water from 10degree c to 30degree c ? Assume that all the heat is taken up by the water . Take specific heat of water =4209J kg^–1degree c^–1. Plz tell the ans if you are able to i m not able to slove this . try to do this in easy way.?.
A water heater marked 2kw, 220v is connected to 220 v supply how long will it taketo heat 20 kg of water from 10degree c to 30degree c ? Assume that all the heat is taken up by the water . Take specific heat of water =4209J kg^–1degree c^–1. Plz tell the ans if you are able to i m not able to slove this . try to do this in easy way.? for Class 10 2024 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about A water heater marked 2kw, 220v is connected to 220 v supply how long will it taketo heat 20 kg of water from 10degree c to 30degree c ? Assume that all the heat is taken up by the water . Take specific heat of water =4209J kg^–1degree c^–1. Plz tell the ans if you are able to i m not able to slove this . try to do this in easy way.? covers all topics & solutions for Class 10 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A water heater marked 2kw, 220v is connected to 220 v supply how long will it taketo heat 20 kg of water from 10degree c to 30degree c ? Assume that all the heat is taken up by the water . Take specific heat of water =4209J kg^–1degree c^–1. Plz tell the ans if you are able to i m not able to slove this . try to do this in easy way.?.
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A water heater marked 2kw, 220v is connected to 220 v supply how long will it taketo heat 20 kg of water from 10degree c to 30degree c ? Assume that all the heat is taken up by the water . Take specific heat of water =4209J kg^–1degree c^–1. Plz tell the ans if you are able to i m not able to slove this . try to do this in easy way.?, a detailed solution for A water heater marked 2kw, 220v is connected to 220 v supply how long will it taketo heat 20 kg of water from 10degree c to 30degree c ? Assume that all the heat is taken up by the water . Take specific heat of water =4209J kg^–1degree c^–1. Plz tell the ans if you are able to i m not able to slove this . try to do this in easy way.? has been provided alongside types of A water heater marked 2kw, 220v is connected to 220 v supply how long will it taketo heat 20 kg of water from 10degree c to 30degree c ? Assume that all the heat is taken up by the water . Take specific heat of water =4209J kg^–1degree c^–1. Plz tell the ans if you are able to i m not able to slove this . try to do this in easy way.? theory, EduRev gives you an
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