Air breaks down (loses its insulating quality) and sparkingresults if the field

Question

Air breaks down (loses its insulating quality) and sparkingresults if the field strength is increased to about 3.0 x106 N/C. a) What acceleration does an electron experience in such afield? b) If the electron starts from rest, in what distance does itacquire a speed equal to 10% of the speed of light? Air breaks down (loses its insulating quality) and sparkingresults if the field strength is increased to about 3.0 x106 N/C. a) What acceleration does an electron experience in such afield? b) If the electron starts from rest, in what distance does itacquire a speed equal to 10% of the speed of light?

Explanation / Answer

a) The acceleration of the electron experience inthe electric field is                 a = (eE)/m Here e = 1.6*10-19C            E= 2.0*106 N/C            m =9.11*10-31kg b) We know that         distance is d =[v2-u2]/(2a)    Here u =0            v=0.1 c substitute the values.

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