The diagram below shows a cathode ray tube in which the arrow indicates a beam of charged particles approaching an electric field between the plates A and B. State the amount of charge on each particle.
1.6×10−19C
−1.6×10−19C
0
−1.16×10−19C
A
1.6×10−19C
B
−1.6×10−19C
C
0
D
−1.16×10−19C
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Solution
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The beam of charged particles in the cathode ray tube experiment is an electron beam, hence the charge on each particle equals −1.6×10−19C
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