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A wire of resistance R is cut into two equal parts, its resistance becomes R/2, what hapens to resistivity:

Correct answer: B. Same

  • A. Double
  • B. Same
  • C. Half
  • D. One fourth

Explanation

Resistivity does not depend upon dimension (L,W) of wire. It only depends upon nature & temperature of wire. As the nature of the wire remains the same, the resistivity is also same.

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About Current Electricity

Steady current relates charge flow to potential difference, resistance and resistivity, including how temperature changes a conductor's resistance. Sources with internal resistance have terminal voltage below their emf when delivering current, and maximum power output occurs under a specific load condition rather than at zero resistance.

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