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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: - Velocities of sound measured in hydrogen and oxygen gas at a given temperature
- Two 220V – 100W bulbs are connected first in series and then in parallel.
- One milligram of matter on convertion into energy will give
- Which of the following particles will have minimum frequency of revolution
- The maximum particle velocity in a wave motion is half the wave velocity.
Topics: Alternating Current
(96)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Velocities of sound measured in hydrogen and oxygen gas at a given temperature
- Two 220V – 100W bulbs are connected first in series and then in parallel.
- One milligram of matter on convertion into energy will give
- Which of the following particles will have minimum frequency of revolution
- The maximum particle velocity in a wave motion is half the wave velocity.
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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