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Grade: 12 
        
the current in an electron beam in a cathode-ray tube is measured to be 80microA.The number of electrons that hit the screen in 8s is.
one year ago

Answers : (1)

Khimraj
3007 Points 
							
I = q/t = ne/t
so n = It/e
n = 80*10-6*8/1.6*10-19
n = 4*1015
Hope itclears.............................................................................................
one year ago
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