| ⇦ | 
| ⇨ |
A coil of self-inductance L is connected in series with a bulb B and an AC source. Brightness of the bulb decreases when
Options
(a) number of turns in the coil is reduced
(b) a capacitance of reactance Xc = Xl is included in the same circuit
(c) an iron rod is inserted in the coil
(d) frequency of the AC source is decreased
Correct Answer:
an iron rod is inserted in the coil
Explanation:
By inserting iron rod in the coil, L ↑ z ↑ I ↓ so brightness ↓
Related Questions: - In a franhofer diffraction experiment at a single slit using a light of wavelength
- In a mass spectrometer used for measuring the masses of ions, the ions
- A car wheel is rotated to uniform angular acceleration about its axis
- A body of mass m slides down an incline and reaches the bottom
- The nuclei of which one of the following pairs of nuclei are isotones?
Topics: Alternating Current
(96)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- In a franhofer diffraction experiment at a single slit using a light of wavelength
- In a mass spectrometer used for measuring the masses of ions, the ions
- A car wheel is rotated to uniform angular acceleration about its axis
- A body of mass m slides down an incline and reaches the bottom
- The nuclei of which one of the following pairs of nuclei are isotones?
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
Leave a Reply