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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 name of ions knocked out from the hot surface is
- Alternating current cannot be measured by D.C Ammeter because
- Which of the following physical quantities has neither dimensions nor unit
- Two identical thin plano-convex glass lenses (refractive index 1.5) each having
- A force of 10N is applied on a body for 3 sec and the corresponding displacement 6 m.
Topics: Alternating Current
(96)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The name of ions knocked out from the hot surface is
- Alternating current cannot be measured by D.C Ammeter because
- Which of the following physical quantities has neither dimensions nor unit
- Two identical thin plano-convex glass lenses (refractive index 1.5) each having
- A force of 10N is applied on a body for 3 sec and the corresponding displacement 6 m.
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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