For a wire $\frac{R}{l}=\frac{1}{2}$ and length of wire is $l=5\, cm .$ If potential difference $1\, V$ is applied across it, current through wire will be: $( R =$ Resistance $)$ (in $A$)
  • A$40$
  • B$4$
  • C$25$
  • D$2.5$
AIIMS 2019, Medium
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