Question 6
The current in a
circuit component is 2.00 μA.
How many electrons
pass through the component each second?
A 1.25×1013 B 1.25×1016 C 1.25×1019 D 1.25×1025
Reference: Past Exam Paper – June 2017 Paper 12 Q32
Solution:
Answer:
A.
Current I = 2.00 μA
Current I = 2.00 × 10-6 A
Charge Q = It
Charge Q = 2.00 × 10-6 × 1
Charge Q = 2.00 × 10-6
C
This charge is due to
electrons. Each electron has a charge of 1.6×10-19 C.
1.6×10-19 C - -
- > 1 electron
1 C - - - > 1 / 1.6×10-19
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