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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.
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Topics: Alternating Current
(96)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Two identical thin plano-convex glass lenses (refractive index 1.5) each having
- Six molecules have speeds 2 units, 5 units, 3 units, 6 units, 3 units and 5 units
- In a transistor, the value of βis 100, then the value of α will be
- The excitation potential of hydrogen atom in the first excited state is
- A body revolved around the sun 27 times faster than the earth. What is the ratio
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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