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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 uniform electric field and uniform magnetic field are acting along the same
- Two Carnot engine A and B are operated in series. The engine A receives
- In stretching a spring by 2 cm, energy stored is given by U. Had is been stretched
- In one dimensionsal motion,instantaneous speed v statisfies 0⦤v⦤vₒ
- An aicraft executes a horizontal loop of radius 1 km with a speed of 900 kmh⁻¹
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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