Question

in a particular Television tube a beam of electrons is emitted the beam current is 80 microA.how many electron strike the screen of tv every second ? Also find the total charge striking the screen in 2 minutes solution​

Answer 1

Answer:

I = 80 micro Ampere = 8 x 10^-5

t = 1 sec.

I = Q/t = ne/t

n = It/e = 8 x 10^-5 x 1 divided by 1.6 x 10^-19 = 5 x 10^14 electrons strike the screen every second.

Also, I = Q/ t

Q = It = 8 x 10^-5 x 2 x 60

= 960 x 10-5 C = 9.6 x 10^-3 C

Explanation:

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