Home
Class 12
PHYSICS
In a hydrogen atube it is observed that ...

In a hydrogen atube it is observed that through a given cross-section `3.13xx10^(15)` electrons per sec, moving from right to left and`3.12xx10^(15)` protons per sec are moving from left to right. The electric current in the discharge tube ad its direction is

A

1 mA towads left

B

1 mA towards right

C

1.5 mA towards right

D

2 mA towards left

Text Solution

Verified by Experts

The correct Answer is:
B
`I =((n_(e)+n_(p))e)/t`
Promotional Banner

Similar Questions

Explore conceptually related problems

Through a give cross section n_(1) electrons per second are passing from left to right and n_(2) protons per second are passing from right to left simultaneously. The electric current throught that cross section is ( theta = electronic charge).

In a given time of 10s, 40s electrons pass from right to left. In the same interval of time 40 protons also pass from left to right. Is the average current zero? If not, the find the value of average current.

In a discharge tube, 6 xx 10^18 electrons move to the left and 4 xx 10^18 protons move to the right past a cross-section in every second. Find the magnitude and the direction of current.

In a neon discharge tube 2.9 xx 10^(18) Ne^(+) ions move to the right each second while 1.2 xx 10^(18) eletrons move to the left per second. Electron charge is 1.6 xx 10^(-9) C . The current in the discharge tube

10^(23) electrons passed from left to rigth normally through a cross section in 1s. Average current through the cross section is

In a discharge tube when 200 volt potential difference is applied 6.25xx10^(18) electrons move from cathode to anode and 3.125xx10^(18) singly charged positive ions move from anode to cathode in one second. Then the power of tube is:

In an electrolyte 3.2 xx 10^(18) bivalent positive ions drift to the right per second while 3.6 xx 10^(18) monovalent negaitve ions drift to the per second. Then the current is

In a gas discharge tube, if 3 times 10^18 electrons are flowing per sec from left to right and 2 times 10^18 protons are flowing per second from right to left of a given cross-section, the magnitude and direction of current through the cross-section :