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Question

A battery of 2 V and internal resistance 1 is used to send a current through a potentiometer wire of length 200 cm and resistance  What is the potential gradieut of the wire?

  1. 8cross times 10 to the power of negative 3 end exponent V c m to the power of negative 1 end exponent
  2. 4cross times 10 to the power of negative 1 end exponent V space c m to the power of negative 1 end exponent
  3. 6 cross times 10 to the power of negative 3 end exponent V space c m to the power of negative 1 end exponent
  4. 2 cross times 10 to the power of negative 1 end exponent V space c m to the power of negative 1 end exponent

The correct answer is: 8cross times 10 to the power of negative 3 end exponent V c m to the power of negative 1 end exponent

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