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  • The number of electrons striking the screen of CRT is 7.5  calculate the electric current 

Asked by Harshavardhankapu 16th July 2019, 8:14 PM
Answered by Expert
Answer:
Number of electrons striking per second is required to calculate current.
 
Proper question is given below :-

The number of electrons striking the screen of CRT is 7.5×1015 in10s calculate the electric current

---------------------------------------------
 
current = charge / time = ( Number of elecrons × charge on electron)/time
 
Hence current = (7.5×1015 ×1.602×10-19 ) / 10 ≈ 12×10-5 A  = 120 μA
Answered by Expert 16th July 2019, 8:59 PM
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