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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: - Rate of photoelectric emission is proportional to
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Topics: Alternating Current
(96)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Rate of photoelectric emission is proportional to
- 6Ω and 12Ω resistors are connected in parallel. This combination is connected
- In a circuit, 5% of total current passes through a galvanometer. If resistance
- The wavelength λₑ of an electron and λₚ of a photon are of same energy E are related by
- When a mass m is attached to a spring, it normally extends by 0.2 m.
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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