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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: - A transistor is working in common emitter mode. Its amplification factor is 80
- A electric dipole is placed at an angle of 30⁰ to a non-uniform electric field.
- Spectrum of X-rays is
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Topics: Alternating Current
(96)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A transistor is working in common emitter mode. Its amplification factor is 80
- A electric dipole is placed at an angle of 30⁰ to a non-uniform electric field.
- Spectrum of X-rays is
- A car sounding a horn of frequency 100 Hz passes an observer. The ratio
- The term liquid crystal refers to a state that is intermediate between
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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