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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
- The impurity atoms with which pure silicon may be doped to make it a p-type
- The conducting loop in the form of a circle is placed in a uniform magneitc field
- A wire is stretched under a force. If the wire suddenly snaps the temperature
- The radius of curvature of the convex face of a plano-convex lens is 12 cm
- The molar specific heats of an ideal gas at constant pressure and volume are denoted
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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