Current Electricity Charging Discharging Of Capacitors Question 420
Question: In a hydrogen discharge tube it is observed that through a given cross-section $ 3.13\times 10^{15} $ electrons are moving from right to left and $ 3.12\times 10^{15} $ protons are moving from left to right. What is the electric current in the discharge tube and what is its direction
[AFMC 1996]
Options:
A) $ 1,mA, $ towards right
B) $ 1mA $ towards left
C) $ 2mA $ towards left
D) $ 2,mA $ towards right
Show Answer
Answer:
Correct Answer: A
Solution:
$ I=n _{e}q _{e}+n _{p}q _{p}=1mA $ towards right
BETA
