Home
Class 12
PHYSICS
A constant current is maintained in a re...

A constant current is maintained in a resistive solenoid having iron rod as its core. Which of the following quantities will change when iron rod is removed from solenoid?

A

Rate of heat dissipation

B

Magnetic flux linked with the solenoid

C

Magnetic field inside solenoid

D

Self-inductance of the solenoid

Text Solution

Verified by Experts

The correct Answer is:
B, C, D
Iron core is magnetized when current passes through the solenoid. Hence magnetic field inside the solenoid is greatly affected by the presence of iron core. Due to effect on magnetic field, corresponding magnetic flux and self-inductance is also affected. In fact, magnetic flux, magnetic field and self-inductance decrease when iron rod is removed. Hence, options (b), (c) and (d) are correct.
Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETIC INDUCTION

    MODERN PUBLICATION|Exercise COMPETITION FILE (MULTIPLE CHOICE QUESTIONS BASED ON GIVEN PASSAGE)|7 Videos

  • ELECTROMAGNETIC INDUCTION

    MODERN PUBLICATION|Exercise COMPETITION FILE (ASSERTION REASON TYPE QUESTIONS)|10 Videos

  • ELECTROMAGNETIC INDUCTION

    MODERN PUBLICATION|Exercise COMPETITION FILE (MULTIPLE CHOICE QUESTIONS) (AIPMT/NEET & Other State Boards for Medical Entrance)|8 Videos

  • ELECTRIC CHARGES AND FIELDS

    MODERN PUBLICATION|Exercise Chapter Practice Test|15 Videos

  • ELECTROMAGNETIC WAVES

    MODERN PUBLICATION|Exercise CHAPTER PRACTICE TEST|14 Videos

Similar Questions

Explore conceptually related problems

A constant current I is maintained in a solenoid. Which of lthe following quantities will increase if an iron rod is inserted in the solenoid along its asix?

Two resistive solenoids are made of same geometry and same number of turns per unit length. Copper wire used to make the solenoids are having different radius of cross section. Which of the following quantities are different for solenoids?

A solenoid with an iron core and a bulb are connected to a d.c. source. How does the brightness of the bulb change when iron core is removed from the solenoid ?

When current is passed through a wire wound around an iron rod, it produces

Two solenoids have identical geometrical construction but one is made of thick wire and the other of thin wire. Which of the following quantities are different for the two solenoids?

An indcutor having self inductance L with its coil resistance R is connected across a battery of emf elipson . When the circuit is in steady state t = 0, an iron rod is inserted into the inductor due to which its inductance becomes nL (ngt1). After insertion of rod which of the following quantities will change with time? (1) Potential difference across terminals A and B (2) Inductance (3) Rate of heat produced in coil

A tightly-wound, long solenoid having 50 turns cm^(-1) , carris a current of 4.00 A . Find the magnetic intensity H and the magnetic field B at the centre of the solenoid. What will be the values of these quantities if an iron core is inserted in the solenoid and the magnetization I in the core is 4.00 xx 10^6 A m^(-1) ?

A solenoid carrying a current supplied by a DC source with a constant emf contains an iron core inside it. How will the current change when the core is pulled out of the solenoid: will it increase, decrease, or remain the same?

Assertion (A) : An electric lamp is connected in series with a long solenoid of copper with air core and then connected to AC source. If an iron rod is inserted in solenoid the lamp will become dim. Reason (R ) : If iron rod is inserted in solenoid, the induction of solenoid increases.

MODERN PUBLICATION-ELECTROMAGNETIC INDUCTION-COMPETITION FILE (MULTIPLE CHOICE QUESTIONS) (JEE (Main) & Other State Boards for Engineering Entrance)
  1. A fighter plane of length 20 m, wing span (distane from tip of one win...

    Text Solution

    |

  2. A small loop is kept inside a bigger loop as shown in figure. Both the...

    Text Solution

    |

  3. Which of the following have dimensions of frequency?

    Text Solution

    |

  4. A constant current is maintained in a resistive solenoid having iron r...

    Text Solution

    |

  5. Copper wire is used to make a circular ring which is placed completely...

    Text Solution

    |

  6. Two resistive solenoids are made of same geometry and same number of t...

    Text Solution

    |

  7. Length of the bar magnet is aligned along the axis of a circular coil ...

    Text Solution

    |

  8. Uniform magnetic field B, exists in the vertical downward direction. A...

    Text Solution

    |

  9. A metallic ring with a small cut is held horizontally and a magnet is ...

    Text Solution

    |

  10. There are two parallel rings R(1) and R(2) placed co-axially and a bar...

    Text Solution

    |

  11. Resistor of resistance R and a capacitor of capacitance Care connected...

    Text Solution

    |

  12. A square loop of size a x a is moved with constant velocity v towards ...

    Text Solution

    |

  13. A metal rod is pivoted about its one end and is free to rotate in a ve...

    Text Solution

    |

  14. Metal ring of radius R is placed perpendicular to uniform magnetic fie...

    Text Solution

    |

  15. A circular loop of metal wire of radius r is placed perpendicular to u...

    Text Solution

    |

  16. A circular loop is kept perpendicular to a uniform magnetic field. Loo...

    Text Solution

    |

  17. A rigid wire loop of square shape having side of length L and resistan...

    Text Solution

    |

  18. A conducting loop in the shape of right-angled isosceles triangle of h...

    Text Solution

    |

  19. A current-carrying infinitely long wire is kept along the diameter of ...

    Text Solution

    |

  20. A circular insulated copper wire loop is twisted to form two loops of ...

    Text Solution

    |