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Shyam01 Sundar
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Asked: 2025-01-22T10:42:15+00:00 In:

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 the iron core is removed from the solenoid?

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The brightness of the bulb does not change because there is no effect of inductance of the solenoid in a d.c. circuit.
Class 12 Physics NCERT Sample Paper Question Session 2024-2025.

class 12 physicsncert sample paper questionthe brightness of the bulb changewhen the iron core is removed from the solenoid
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    1 Answer

    1. When the iron core is removed, the solenoid’s inductance decreases, reducing opposition to current changes. However, in a d.c. circuit, inductance has minimal effect in steady state. The current remains the same, so the brightness of the bulb does not change.

      For more visit here:
      https://www.tiwariacademy.com/ncert-solutions/class-12/physics/chapter-8/

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