| ⇦ | 
| ⇨ |
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 charges of equal magnitude q are placed in air at a distance 2a
- A nucleus of mass number 220, initially at rest, emits an α-particle. If the Q-value
- A galvanometer of 50 Ω resistance has 25 divisions. A current of 4×10⁻⁴ A gives
- The range of voltmeter is 10V and its internal resistance is 50Ω.
- A beam of cathode rays is subjected to crossed Electric (E) and Magnetic fields (B)
Topics: Electrostatics
(146)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Two charges of equal magnitude q are placed in air at a distance 2a
- A nucleus of mass number 220, initially at rest, emits an α-particle. If the Q-value
- A galvanometer of 50 Ω resistance has 25 divisions. A current of 4×10⁻⁴ A gives
- The range of voltmeter is 10V and its internal resistance is 50Ω.
- A beam of cathode rays is subjected to crossed Electric (E) and Magnetic fields (B)
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