STANDARDPhysics-Energy
STANDARD Physics Energy Conversion MCQ Question
Type: MCQ-numerical-Medium
1 kilowatt hour (kWh) is equal to
A
2.25 × 10²² eV
B
2.25 × 10²³ eV
C
2.25 × 10²⁵ eV
D
2.25 × 10²⁷ eV
Correct Answer
Option C
Detailed Explanation
1 kilowatt hour (kWh) = (10³ W) × (3600 s). Converting to electron volts: 3.6 × 10⁶ / 1.6 × 10⁻¹⁹ eV (1 eV = 1.6 × 10⁻¹⁹ J) = 2.25 × 10²⁵ eV.
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