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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: - An LCR circuit contains resistance of 100 ohm and a supply of 200 volt at 300 radian
- Velocities of sound measured in hydrogen and oxygen gas at a given temperature
- Calcium plate has a maximum possible radiation wavelength 400 nm to eject electrons.
- After 300 days, the activity of a radioactive sample is 5000 dps
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Topics: Alternating Current
(96)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- An LCR circuit contains resistance of 100 ohm and a supply of 200 volt at 300 radian
- Velocities of sound measured in hydrogen and oxygen gas at a given temperature
- Calcium plate has a maximum possible radiation wavelength 400 nm to eject electrons.
- After 300 days, the activity of a radioactive sample is 5000 dps
- If A=4i+4j+4k and b=3i+j+4k, then angle between vectors A and B is
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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