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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: - Wires A and B are made from the same material. A has twice the diameter and three times
- Two springs with spring constants K₁=1500 N/m and K₂=3000 N/m
- Zenor diode is used for
- Two thin dielectric slabs of dielectric constants K₁ and K₂, (K₁ < K₂) are inserted
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Topics: Alternating Current
(96)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Wires A and B are made from the same material. A has twice the diameter and three times
- Two springs with spring constants K₁=1500 N/m and K₂=3000 N/m
- Zenor diode is used for
- Two thin dielectric slabs of dielectric constants K₁ and K₂, (K₁ < K₂) are inserted
- The Bohr model of atoms
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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