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Question: Answered & Verified by Expert
Three cells of emf 1 V and internal resistance 1 Ω each are connected as shown. Effective emf of combination between the points P and Q is -


PhysicsCurrent ElectricityNEET
Options:
  • A Zero
  • B 1 V
  • C 2 V
  • D 23V
Solution:
1739 Upvotes Verified Answer
The correct answer is: Zero
Two batteries of emf 1 V are combined, and two resistance also combine in series  



Enet=E1 r2- E2 r1r1+r2=2 - 22+1=0

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