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Chapter 37: Q.8 (page 1081)

The current in a Crookes tube is 10nA. How many electrons strike the face of the glass tube each second?

Short Answer

Expert verified

Number of electrons striking the surface are6.25脳1010.

Step by step solution

01

Step 1. Given information

Current in a Crookes tube is given as i=10nA. We have been asked how many electrons will strike the surface of the glass tube each second.

02

Step 2. Simplify

Current is defined as charge per time

i=n脳et

where n =number of electrons ,e=charge of each electronlocalid="1649752407663" =1.6脳10-19Cand t is time=1sec

solving

n=i脳te=10脳10-9脳11.6脳10-19=6.25脳1010

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