| ⇦ | 
| ⇨ |
A coil has resistance 30 ohm and inductive reactance 20 ohm at 50 Hz frequency. If an ac source, of 200 volt, 100 Hz, is connected across the coil, the current in the coil will be
Options
(a) 4.0 A
(b) 8.0 A
(c) 20 / √13 A
(d) 2.0 A
Correct Answer:
4.0 A
Explanation:
If ? = 50 x 2π then ?L = 20Ω
If ?’ = 100 x 2π then ?’L = 40Ω
I = 200 / Z = 200 / √ R² + (?’L)²
= 200 / √ (30)² + (40)²
I = 4 A
Related Questions: - To measure the roughness of the surface of a material, which of the following microscope
- An electron of a stationary hydrogen atom passes from the fifth energy level to
- The sun light reaches us as white and not as its components because
- Which of the following transitions in hydrogen atoms emit photons of highest frequency?
- An atom bomb works on the principle of
Topics: Alternating Current
(96)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- To measure the roughness of the surface of a material, which of the following microscope
- An electron of a stationary hydrogen atom passes from the fifth energy level to
- The sun light reaches us as white and not as its components because
- Which of the following transitions in hydrogen atoms emit photons of highest frequency?
- An atom bomb works on the principle of
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