| ⇦ | 
| ⇨ |
A condenser has a capacity 2 μF and is charged to a voltage of 50 V. The energy stored is
Options
(a) 25×10⁵ joule
(b) 25 joule
(c) 25×10 erg
(d) 25×10³ erg
Correct Answer:
25×10³ erg
Explanation:
Energy = (1/2) CV² = (1/2) × (2 × 10⁻⁶) × (50)²
= (2 × 10⁻⁶ × 2500) / 2 = 2500 × 10⁻⁶ J
Energy = 2500 × 10⁻⁶ × 10⁷ = 25 × 10³ erg
Related Questions: - A gramophone record is revolving with an angular velocity ?. A coin is placed at
- The displacement of a particle along the x-axis is given by x = a sin² ?t
- Two charges each equal to 2µ C are 0.5m apart. If both of them exist inside vacuum
- A beam of cathode rays is subjected to crossed Electric (E) and Magnetic fields (B)
- The lowest frequency of light that will cause the emission of photoelectrons
Topics: Electrostatics
(146)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A gramophone record is revolving with an angular velocity ?. A coin is placed at
- The displacement of a particle along the x-axis is given by x = a sin² ?t
- Two charges each equal to 2µ C are 0.5m apart. If both of them exist inside vacuum
- A beam of cathode rays is subjected to crossed Electric (E) and Magnetic fields (B)
- The lowest frequency of light that will cause the emission of photoelectrons
Topics: Electrostatics (146)
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