Question

A tv set picture tube shoots out a beam of electron .the current due to this beam is 5mA per minute how many electron will strike t.v. screen every second

Answer 1

Explanation:

q=it and q=ne formulae can be xombined to get n=it/e formula

Answer 2

Answer:

1.875 × 10^18

Explanation:

I=q/t

q=ne

I=ne/t

n=It/e [e=1.6 × 10^(-19)]

=5 × 10^(-3) × 60 ÷ 1.6 × 10^(-19)

=1.875 × 10^18

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Hope it helps....