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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
- If an electron and a proton have the same de-Broglie wavelength, then the kinetic
- A bullet of mass 0.05 kg moving with a speed of 80 m/s enters a wooden
- If a magnet is suspended at an angle 30⁰ to the magnetic meridian, the dip needle
- The angular velocity of second’s hand of a watch is
- A particle moves along a circle of radius 20/π m with constant tangential acceleration
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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