Current Electricity Charging Discharging Of Capacitors Question 290
Question: A cell of internal resistance 3 ohm and emf 10 volt is connected to a uniform wire of length 500 cm and resistance 3 ohm. The potential gradient in the wire is
[MP PET 2003]
Options:
A) 30 mV/cm
B) 10 mV/cm
C) 20 mV/cm
D) 4 mV/cm
Show Answer
Answer:
Correct Answer: B
Solution:
Potential gradient = $ \frac{e.R}{(R+r).L} $ = $ \frac{10\times 3}{(3+3)\times 5} $ . $ =1V/m=10,mV/cm. $
BETA
