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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 radioactive substance emits n beta particles in the first 2 s and 0.5 n beta
- Four identical cells of emf Ԑ and internal resistance r are to be connected in series.
- Two particles P and Q start from origin and execute simple harmonic motion along X-axis
- A boy is trying to start a fire by focusing sunlight on a piece of paper using
- A body of mass m is orbiting the earth at a radius r from the center of earth
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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