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A heating element has a resistance of 100 Ω at room temperature. When it is connected to a supply of 220 V, a steady current of 2 A passes in it and temperature is 500°C more than room temperature. What is the temperature coefficient of resistance of the heating element?
  • a)
    5 × 10-4 °C-1
  • b)
    2 × 10-4 °C-1
  • c)
    1 × 10-4 °C-1
  • d)
    0.5 × 10-4 °C-1
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
A heating element has a resistance of 100Ωat room temperature. W...
Resistance after temperature increases by 500°C = 220/2 = 110 Ω
The variation of the resistance with temperature is given by:
R2 = R1(1 + 
α(T
2
 - T
1
))

110 = 100(1 + 
α × 500
)
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A heating element has a resistance of 100Ωat room temperature. When it is connected to a supply of 220 V, a steady current of 2 A passes in it and temperature is 500°C more than room temperature. What is the temperature coefficient of resistance of the heating element?a)5 × 10-4°C-1b)2 × 10-4°C-1c)1 × 10-4°C-1d)0.5 × 10-4°C-1Correct answer is option 'B'. Can you explain this answer?
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A heating element has a resistance of 100Ωat room temperature. When it is connected to a supply of 220 V, a steady current of 2 A passes in it and temperature is 500°C more than room temperature. What is the temperature coefficient of resistance of the heating element?a)5 × 10-4°C-1b)2 × 10-4°C-1c)1 × 10-4°C-1d)0.5 × 10-4°C-1Correct answer is option 'B'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about A heating element has a resistance of 100Ωat room temperature. When it is connected to a supply of 220 V, a steady current of 2 A passes in it and temperature is 500°C more than room temperature. What is the temperature coefficient of resistance of the heating element?a)5 × 10-4°C-1b)2 × 10-4°C-1c)1 × 10-4°C-1d)0.5 × 10-4°C-1Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A heating element has a resistance of 100Ωat room temperature. When it is connected to a supply of 220 V, a steady current of 2 A passes in it and temperature is 500°C more than room temperature. What is the temperature coefficient of resistance of the heating element?a)5 × 10-4°C-1b)2 × 10-4°C-1c)1 × 10-4°C-1d)0.5 × 10-4°C-1Correct answer is option 'B'. Can you explain this answer?.
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