A source of e.m.f. 12 V drives 2 A for 30 s. The energy it supplies is:

  1. 720 J
  2. 1440 J
  3. 24 J
  4. 360 J
Answer

A) 720 J

W = mathcalEIt = 720 J. SLO P-09-E-15 · Application

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