Question 1:
moderate
10,000 alpha particles per minute are passing through a straight tube of radius r. The resulting electric current is approximately :
Let’s solve the problem step by step:
1. Key Concepts
- Alpha particles (
) have a charge of
, where
is the elementary charge.
- Electric current
is the rate of flow of charge:
2. Total Charge Passing per Minute
We are given:
-particles per minute,
- Each
-particle carries a charge
.
The total charge passing in 1 minute is:
3. Current
Convert the time from minutes to seconds:
The current is:
Rounding off, the current is approximately: