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Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:
Assertion : Heater wire must have high resistance and will be melting point.
Reason : If resistance is high, the electric conductivity will be less.
  • a)
    Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).
  • b)
    Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).
  • c)
    Assertion (A) is true but reason (R) is false.
  • d)
    Assertion (A) is false but reason (R) is true.
  • e)
    Both Assertion and Reason are false.
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
Directions: In the following questions, a statement of assertion (A) ...
Heater wire must have high resistance and high melting point, because in series current remains same, therefore according to Joule’s law, H= PR t, heat produced is high if R is high melting point must be high, so that wire may not melt with increase in temperature.
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Directions: In the following questions, a statement of assertion (A) ...
Assertion: Heater wire must have high resistance and will be melting point.
Reason: If resistance is high, the electric conductivity will be less.

The correct answer is option 'A': Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).

Explanation:
1. Heater wire: A heater wire is designed to produce heat when an electric current passes through it. It is made of a material that has high resistance to the flow of electric current.
2. Resistance: Resistance is the property of a material to resist the flow of electric current. It is measured in ohms. The higher the resistance, the more difficult it is for electric current to flow through the material.
3. Melting point: The melting point of a substance is the temperature at which it changes from a solid to a liquid state. In the case of a heater wire, it is important for the wire to have a high melting point to withstand the heat generated when the electric current passes through it.
4. Relation between resistance and electric conductivity: Electric conductivity is the measure of how well a material allows electric current to flow through it. It is the reciprocal of resistance. So, if resistance is high, the electric conductivity will be less. This means that the material will not allow electric current to flow easily through it.
5. Explanation of the assertion: The heater wire must have high resistance because it needs to generate heat when an electric current passes through it. If the wire had low resistance, the electric current would flow easily through it, but it would not generate enough heat. Therefore, the heater wire needs to have high resistance. Additionally, the wire should have a high melting point to withstand the heat generated during its operation.

In conclusion, the assertion that the heater wire must have high resistance and a high melting point is true. The reason provided, that if the resistance is high, the electric conductivity will be less, is the correct explanation for the given assertion.
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Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : Heater wire must have high resistance and will be melting point.Reason : If resistance is high, the electric conductivity will be less.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.e)Both Assertion and Reason are false.Correct answer is option 'A'. Can you explain this answer? for Class 10 2025 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : Heater wire must have high resistance and will be melting point.Reason : If resistance is high, the electric conductivity will be less.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.e)Both Assertion and Reason are false.Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 10 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : Heater wire must have high resistance and will be melting point.Reason : If resistance is high, the electric conductivity will be less.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.e)Both Assertion and Reason are false.Correct answer is option 'A'. Can you explain this answer?.
Solutions for Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : Heater wire must have high resistance and will be melting point.Reason : If resistance is high, the electric conductivity will be less.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.e)Both Assertion and Reason are false.Correct answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 10. Download more important topics, notes, lectures and mock test series for Class 10 Exam by signing up for free.
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