| ⇦ | 
| ⇨ |
When three identical bulbs of 60 W-200 V rating are connected in series to a 200 V supply, the power drawn by them will be
Options
(a) 60 W
(b) 180 W
(c) 10 W
(d) 20 W
Correct Answer:
20 W
Explanation:
In series, Resultant resistance = R₁ + R₂ + R₃ = R + R + R = 3R
Power = V² / R ⇒ 60 = V² / R ⇒ V² = 60 R
Power of combination = P
P = V² / Resistance of combination = 60 / 3 R = 20 W
Related Questions: - A potentiometer wire is 100cm long and a constant potential difference is maintained
- A balloon with mass m is descending down with an acceleration a
- The cadmium rods are used in nuclear reactor to
- A spherical conductor of radius 2 m is charged to a potential of 120 V. It is now
- Two point charge +9e and +e are at 16 cm away from each other.
Topics: Magnetic Effects of Current and Magnetism
(167)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A potentiometer wire is 100cm long and a constant potential difference is maintained
- A balloon with mass m is descending down with an acceleration a
- The cadmium rods are used in nuclear reactor to
- A spherical conductor of radius 2 m is charged to a potential of 120 V. It is now
- Two point charge +9e and +e are at 16 cm away from each other.
Topics: Magnetic Effects of Current and Magnetism (167)
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