Current Electricity Charging Discharging Of Capacitors Question 284
A 10 m long wire of 20 Ω resistance is connected with a battery of 3 volt e.m.f. (negligible internal resistance) and a 10 Ω resistance is joined to it in series. Potential gradient along wire in volt per meter is
[MP PMT 2003]
Options:
A) 0.02
0.3
0.2
1.3
Show Answer
Answer:
Correct Answer: C
Solution:
Potential gradient $ x=\frac{eR}{(R+R_{h}+r)L} $
$ =\frac{3}{(20+10+0)}\times \frac{20}{10}=0.2 $
BETA
