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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: - Two discs of same material and thickness have radii 0.2 m and 0.6 m.
- For a cubic crystal structure which one of the following relations
- The temperature coefficient of a resistance wire is 0.00125 per degree.
- The total energy of an electron in the first excited state of hydrogen atom
- The power factor of an AC circuit having resistance R and inductance L connected
Topics: Alternating Current
(96)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Two discs of same material and thickness have radii 0.2 m and 0.6 m.
- For a cubic crystal structure which one of the following relations
- The temperature coefficient of a resistance wire is 0.00125 per degree.
- The total energy of an electron in the first excited state of hydrogen atom
- The power factor of an AC circuit having resistance R and inductance L connected
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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