A potentiometer consists of a wire of length 4 m and resistance \[10\,\Omega \]. It is connected to a cell of e.m.f. 2 V. The potential difference per unit length of the wire will be [CBSE PMT 1999; AFMC 2001]

A potentiometer consists of a wire of length 4 m and resistance \[10\,

1.	A potentiometer consists of a wire of length 4 m and resistance \[10\,\Omega \]. It is connected to a cell of e.m.f. 2 V. The potential difference per unit length of the wire will be [CBSE PMT 1999; AFMC 2001]
A.	0.5 \[V/m\]
B.	\[2\,V/m\]
C.	\[v\]
D.	\[10\,V/m\]
Answer» B. \[2\,V/m\]

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A potentiometer consists of a wire of length 4 m and resistance \[10\,\Omega \]. It is connected to a cell of e.m.f. 2 V. The potential difference per unit length of the wire will be [CBSE PMT 1999; AFMC 2001]

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