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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.
Related Questions: - If the earth shrink such that its mass does not change but radius decreases to one
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- Two wires of the same dimensions but resistivities p1 and p2 are connected in series
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Topics: Alternating Current
(96)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- If the earth shrink such that its mass does not change but radius decreases to one
- In old age arteries carrying blood in the human body become narrow resulting
- Two wires of the same dimensions but resistivities p1 and p2 are connected in series
- If a solid sphere of mass 1 kg and radius 0.1 m rolls without slipping at a uniform
- A Zenor diode has a contact potential of 1 V in the absence of biasing. It undergoes
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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