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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 particle in simple harmonic motion is described by the displacement function
- A missile is fired for maximum range with an initial velocity of 20 m/s
- The excess pressure inside one soap bubble is three times that inside a second soap bubble
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Topics: Electrostatics
(146)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A particle in simple harmonic motion is described by the displacement function
- A missile is fired for maximum range with an initial velocity of 20 m/s
- The excess pressure inside one soap bubble is three times that inside a second soap bubble
- In an ac circuit an alternating voltage e = 200 √2 sin 100 t volts is connected
- Which one of the following is not due to total internal reflection?
Topics: Electrostatics (146)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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