The current in an electron beam in a cathode-ray tube is measured to b – McqOptions

MCQOPTIONS

1.	The current in an electron beam in a cathode-ray tube is measured to be 80 μA. The number of electrons that hit the screen in 8 s is:
A.	2 × 1015
B.	3 × 1015
C.	4 × 1015
D.	6 × 1015
Answer» D. 6 × 1015

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