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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
- A battery of emf 10 V and internal resistance 3 ohm is connected to a resistor.
- A uranium nucleus ₉₂ U ²³⁸ emits an α-particle and a β-particle in succession.
- In the relation n=PV/RT, n stands for
- Sodium and copper have work function 2.3 eV and 4.5 eV respectively
- If a steel wire of length l and magnetic moment M is bent into a semicircular arc,
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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