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CBSE Class 12-science Answered

the number of electrons striking the screen of CRT is 7.5×10^15 in 10 sec. calculate the electric current
Asked by saishankar160 | 10 Feb, 2022, 09:57: PM
Expert Answer
Current = charge / time
 
Charge = no of electrons × e
 
where e = 1.602 × 10-19 C
 
Current = ( 7.5 × 1015 × 1.6 × 10-19 ) / 10  = 120 × 10-6 A = 120 μA
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