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An air core coil and an electric bulb are connected in series with an AC source. If an iron rod is put in the coil, then the intensity of light of the bulb will
Options
(a) remain same
(b) increase
(c) decrease
(d) first decrease then increase
Correct Answer:
decrease
Explanation:
If an iron rod is puts in the coil, then intensity of light of bulb will decrease because the iron rod increase the resistance.
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Topics: Alternating Current
(96)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A car of mass 1000 kg negotiates a banked curve of radius 90 m on a frictionless
- A transistor is operated in common-emitter configuration at Vᵥ = 2 V such that a change
- If the binding energy of the electron in a hydrogen atom is 13.6 eV, the energy
- Angle of minimum deviation for a prism of reractive index 1.5 equal to the angle
- A polished metal plate has a rough and black-spot. It is heated to 1400 K
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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