| ⇦ | 
| ⇨ |
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: - 34 gram of water at 30⁰C is poured into a calorimeter at 15⁰C.
- Which of the following transitions will have highest emission wavelength?
- Two lines of force due to a bar magnet
- A body cools in 7 minute from 60⁰C to 40⁰C. What time, in minute does it take to cool
- 6Ω and 12Ω resistors are connected in parallel. This combination is connected
Topics: Alternating Current
(96)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- 34 gram of water at 30⁰C is poured into a calorimeter at 15⁰C.
- Which of the following transitions will have highest emission wavelength?
- Two lines of force due to a bar magnet
- A body cools in 7 minute from 60⁰C to 40⁰C. What time, in minute does it take to cool
- 6Ω and 12Ω resistors are connected in parallel. This combination is connected
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