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    Hi,

    There's a sentence in the textbook that says 'If a colliding electron loses all of its kinetic energy when it causes excitation, the current due to the flow of electrons is reduced.

    Please could someone explain why the current is reduced?

    Thanks
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    bit of context would help.

    but if this is through a low pressure gas with a PD across it

    I=nVqa

    velocity is a factor on the RHS - what happens to average velocity if the electrons always accelerate at the same rate between collisions but the number of collisions inceases?
 
 
 
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