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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 long wire carrying a steady current is bent into a circular loop of one turn.
- A soap bubble oscillates with time period T, which in turn depends on the pressure
- Three capacitors of capacitances 3 μF, 10 μF and 15 μF are connected in series
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Topics: Alternating Current
(96)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A long wire carrying a steady current is bent into a circular loop of one turn.
- A soap bubble oscillates with time period T, which in turn depends on the pressure
- Three capacitors of capacitances 3 μF, 10 μF and 15 μF are connected in series
- A tuning fork frequency 512 Hz is vibrated with a sonometer wire and 6 beats per second
- The value of Poisson’s ratio lies between
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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