| ⇦ | 
| ⇨ |
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: - The material suitable for making electromagnets should have
- 1 a.m.u. is equivalent to
- The electrons are emitted in the photoelectric effect from a metal surface
- The angular speed of earth, so that the object on equator may appear weightless
- A stone of mass 1kg is tied to a string 4m long and is rotated at constant speed
Topics: Electrostatics
(146)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The material suitable for making electromagnets should have
- 1 a.m.u. is equivalent to
- The electrons are emitted in the photoelectric effect from a metal surface
- The angular speed of earth, so that the object on equator may appear weightless
- A stone of mass 1kg is tied to a string 4m long and is rotated at constant speed
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