A condenser has a capacity 2 μF and is charged to a voltage of 50 V. The energy

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

admin:

Related Questions

  1. The maximum kinetic energy of emitted electrons in a photoelectric effect
  2. In n-type semiconductor, electrons are majority charge carriers
  3. If a wire is stretched to four times its length, then the specific resistance
  4. The total energy of an electron in the first excited state of hydrogen atom
  5. An α-particle and a proton are accelerated through same potential difference