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Chapter 37: Q. 8 (page 1081)

8. The current in a Crookes tube is10nA. How many electrons strike the face of the glass tube each second?

Short Answer

Expert verified

Total number of electrons striking the surface are 6.25×1010.

Step by step solution

01

Step 1. Given information

The current in a Crookes tube is given as10nA.

02

Step 2. Simplify

current is defined as charge per unit time

i=n×et

where n =number of electrons , e =charge of each electron(1.6×10-19) and t is time (1sec) .

solving

n=i×et=10×10-9×11.6×10-19=6.25×1010

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