NextMockSearch exams, e.g. SSC CGL, UPPSC, Lekhpal
हिंदी
State PCS PYQPrelims 2025

BPSC – Combined Competitive Examination · Question 123

The energy consumed in a home in a month is 250 units. The total energy in joules will be:

  1. 9 × 10^5 J
  2. 8 × 10^6 J
  3. 9 × 10^8 J
  4. 10^5 J
Show answer & explanation

Answer: (C) 9 × 10^8 J

Explanation

One unit is 1 kWh = 3.6 × 10^6 J, so 250 units = 9 × 10^8 J.

  • (A) Incorrect

    Wrong: far too small.

  • (B) Incorrect

    Wrong: far too small.

  • (C) Correct

    Correct: 1 unit = 1 kWh = 3.6 × 10^6 J; 250 × 3.6 × 10^6 = 9 × 10^8 J.

  • (D) Incorrect

    Wrong: far too small.