Current Electricity Charging Discharging Of Capacitors Question 192
Question: A 2 volt battery, a $ 15,\Omega $ resistor and a potentiometer of 100 cm length, all are connected in series. If the resistance of potentiometer wire is $ 5,\Omega $ , then the potential gradient of the potentiometer wire is
[AIIMS 1982]
Options:
A) 0.005 V/cm
B) 0.05 V/cm
C) 0.02 V/cm
D) 0.2 V/cm
Show Answer
Answer:
Correct Answer: A
Solution:
Potential gradient $ =\frac{e}{(R+R _{h}+r)}.\frac{R}{L} $
$ =\frac{2}{(15+5+0)}\times \frac{5}{1} $
$ =0.5\frac{V}{m}=0.005,\frac{V}{cm} $
BETA
