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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: - The slope of the graph showing the variation of potential difference V on X-axis
- A current of 2A flows through a 2Ω resistor when connected across a battery
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Topics: Alternating Current
(96)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The slope of the graph showing the variation of potential difference V on X-axis
- A current of 2A flows through a 2Ω resistor when connected across a battery
- The radius of a planet is twice the radius of earth. Both have almost
- The temperature coefficient of the resistance of a wire is 0.00125 per ⁰C.
- Which of the following atoms has the lowest ionisation potential?
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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