Physics-
General
Easy

Question

A 6 V battery of negligible internal resistance is connected across a uniform wire of length 1 m. The positive terminal of another battery of emf 4V and internal resistance 1 capital omega is joined to the point A as shown in figure. The ammeter shows zero deflection when the jockey touches the wire at the point C. The AC is equal to

  1. 2 over 3m    
  2. 1 third m    
  3. 3 over 5 m    
  4. 1 halfm    

The correct answer is: 2 over 3m

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