| ⇦ | 
| ⇨ |
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: - Two similar springs P and Q have spring constants Kp and Kq, such that Kp>Kq.
- A block of mass m moving at a velocity v collides with another block of mass 2m
- A bar magnet having a magnetic moment of 2 x 10⁴JT⁻¹ is free to rotate in a horizontal
- A steady current is passing through a linear conductor of non-uniform cross-section.
- A step-down transformer has 50 turns on secondary and 1000 turns on primary winding.
Topics: Electrostatics
(146)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Two similar springs P and Q have spring constants Kp and Kq, such that Kp>Kq.
- A block of mass m moving at a velocity v collides with another block of mass 2m
- A bar magnet having a magnetic moment of 2 x 10⁴JT⁻¹ is free to rotate in a horizontal
- A steady current is passing through a linear conductor of non-uniform cross-section.
- A step-down transformer has 50 turns on secondary and 1000 turns on primary winding.
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