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Question

Find VAVB at the instant when current in given circuit I = 3A and it is decreasing with 1A/sec at that instant 

  1. - 3.5V
  2. 7.5
  3. 14.5 V
  4. -7.5 V


Solution

The correct option is D -7.5 V

VA+(2)(1)+10(3)(1.5)=VBVA+7.5=VBVAVB=7.5V

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