Current Electricity Charging Discharging Of Capacitors Question 242
Question: 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]
Options:
A) 0.5 $ V/m $
B) $ 2,V/m $
C) $ 5,V/m $
D) $ 10,V/m $
Show Answer
Answer:
Correct Answer: A
Solution:
Since potential difference for full length of wire = 2 V \ P.D. per unit length of wire $ =\frac{2}{4}=0.5,\frac{V}{m} $
BETA
