Q. A coil and a bulb are connected in series with a dc source, a soft iron core is then inserted in the coil. Then
A) Intensity of the bulb remains the same
B) Intensity of the bulb decreases
C) Intensity of the bulb increases
D) The bulb ceases to glow
Explanation
(b) There will be self induction effect when soft iron core is inserted
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.