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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: - A galvanometer having resistance of 50 Ω requires a current of 100μA to give full
- A point performs simple harmonic oscillation of period T and the equation of motion
- The kinetic energy of particle moving along a circle of radius R depends
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Topics: Alternating Current
(96)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A galvanometer having resistance of 50 Ω requires a current of 100μA to give full
- A point performs simple harmonic oscillation of period T and the equation of motion
- The kinetic energy of particle moving along a circle of radius R depends
- A body of mass 2 kg travels according to the law x(t)=pt+qt²+rt³
- 4.0 g of a gas occupies 22.4 litres at NTP. The specific heat capacity of the gas
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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