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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 ball is thrown vertically downwards from a height of 20 m with an initially
- If two charges +4e and +e are at a distance x apart, then at what distance charge q
- The radius of curvature of a convave mirror is 24 cm and the imager is magnified
- The temperature of a body falls from 50⁰C to 40⁰C in 10 minute. If the temperature
- Radius of first orbit of the electron in a hydrogen atom is 0.53 Å. So the radius
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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