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]

Question

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]

TuteeHUB · Accepted Answer

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

TuteeHUB · Answer

$$5\times {{10}^{-5}}\,V/mm$$

TuteeHUB · Answer

$$0.62\times {{10}^{-4}}\,V/mm$$

TuteeHUB · Answer

$$1\times {{10}^{-5}}\,V/mm$$

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.	\[0.62\times {{10}^{-4}}\,V/mm\]
D.	\[1\times {{10}^{-5}}\,V/mm\]
Answer» B. \[2.5\times {{10}^{-4}}\,V/cm\]

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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