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A constant current I is maintained in a solenoid. Which of the following quantities will not increase if an iron rod is inserted in the solenoid along its axis?
  • a)
    Magnetic field at the centre.
  • b)
    Self-inductance of the solenoid.
  • c)
    Magnetic flux linked with the solenoid.
  • d)
    Rate of joule heating.
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
A constant current I is maintained in a solenoid. Which of the followi...
Magnetic field is directly proportional to permiability and when iron rod is inserted the relative permeability changes and thus magnetic field , self inductance is proportional to flux which is proportional to magnetic field and thus follow above explanation, and remaining last option rate of heating =I²R and both these factors doesn't get affected by iron rod , and hence this is correct option.
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Community Answer
A constant current I is maintained in a solenoid. Which of the followi...
Rate of joule heating will not increase since the current is constant in the solenoid.
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A constant current I is maintained in a solenoid. Which of the following quantities will not increase if an iron rod is inserted in the solenoid along its axis?a)Magnetic field at the centre.b)Self-inductance of the solenoid.c)Magnetic flux linked with the solenoid.d)Rate of joule heating.Correct answer is option 'D'. Can you explain this answer? for Class 12 2025 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about A constant current I is maintained in a solenoid. Which of the following quantities will not increase if an iron rod is inserted in the solenoid along its axis?a)Magnetic field at the centre.b)Self-inductance of the solenoid.c)Magnetic flux linked with the solenoid.d)Rate of joule heating.Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 12 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A constant current I is maintained in a solenoid. Which of the following quantities will not increase if an iron rod is inserted in the solenoid along its axis?a)Magnetic field at the centre.b)Self-inductance of the solenoid.c)Magnetic flux linked with the solenoid.d)Rate of joule heating.Correct answer is option 'D'. Can you explain this answer?.
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