electricity numericals!! help needed!!

[saltrock]

When a sufficiently high voltage is applied between two electrodes in a gas, the gas ionises. Electrons move towards the positive electrodes,and positive ions move towards the negative electrode.

a) what is the current in a hydrogen discharge if, in each second, 4.4 x 10^15 electrons and 1.5x 10^15 protons move in opposite directions past a cross-section of the tube?
b)what is the direction of the current? :confused:

[Tide]

This sounds like a homework problem.

Tell us what your thoughts are on the problem.

[Adrian Baker]

a) Start with Q=I x t
You should know the charge on an electron.

b) Look up 'Conventional Current flow'.

c) Post HWK in the HWK help section.

[saltrock]

thanx for your help.

[Adrian Baker]

No problem.

:-)