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The number of electrons striking the screen of CRT is 7.5  calculate the electric current 
Asked by Harshavardhankapu | 16 Jul, 2019, 20:14: PM
answered-by-expert 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 Thiyagarajan K | 16 Jul, 2019, 20:59: PM

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