A potentiometer wire has length 10 m and resistance \[20\,\Omega \]. A 2. 5 V battery of negligible internal resistance is connected across the wire with an \[80\,\Omega \] series resistance. The potential gradient on the wire will be [KCET 1994]

\[2.5\times {{10}^{-4}}\,V/cm\]

A potentiometer wire has length 10 m and resistance \[20\,\Omega \]. A

1.	A potentiometer wire has length 10 m and resistance \[20\,\Omega \]. A 2. 5 V battery of negligible internal resistance is connected across the wire with an \[80\,\Omega \] series resistance. The potential gradient on the wire will be [KCET 1994]
A.	\[5\times {{10}^{-5}}\,V/mm\]
B.	\[2.5\times {{10}^{-4}}\,V/cm\]
C.	Copper
D.	\[1\times {{10}^{-5}}\,V/mm\]
Answer» B. \[2.5\times {{10}^{-4}}\,V/cm\]

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A potentiometer wire has length 10 m and resistance \[20\,\Omega \]. A 2. 5 V battery of negligible internal resistance is connected across the wire with an \[80\,\Omega \] series resistance. The potential gradient on the wire will be [KCET 1994]

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