Energy Stored Capacitor
Energy stored in capacitor with capacitance C and potential V?
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About This Question
- Subject
- physics
- Chapter
- electrostatics
- Topic
- energy stored capacitor
- Difficulty
- Easy
- Year
- 2025
Solution
- Charging Work: Work is done in transferring small amounts of charge dq against a growing potential v=q/C.
- Integral: U=∫0Qv⋅dq=∫0QCqdq=C1[2q2]0Q=2CQ2.
- Using V: Substitute Q=CV⟹U=2C1(CV)2=21CV2.
- Location: This energy is stored in the electric field between the plates.
This easy difficulty physics question is from the chapter electrostatics, covering the topic of energy stored capacitor. It appeared in the 2025 exam.
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