in a region of uniform electric field as an electron travels from A to B it slows
Attachments:
Answers
Answered by
0
Answer:
-18 is correct so, B is right answer
Answered by
0
+48
It is given here,
Me =9.1*10^-31 kg
qe =1.6*10^-19
UA =6.1*10^6 m/s
UB =4.5*10^6m/s
→ W.D = ∆KE
= 1/2n(uB^2-uA^2)
= 1/2*9.1*10^-31 (4.5^2-6.1^2)*10^12
= 9.1/2*(20.25-37.21)*10^-31+12
= 9.1/2*(-16.96)*10^-19
→ W.D = q(VB-VA)
(VB-VA) = W. D /q
= -9.1*16.96*10^-19/ -1.6*10^-19*2
= 96.46/2
= 48.23
=VB-VA =+48v
hope my answer is helpful to you
Thank you
Similar questions