An electron is accelerated from rest through a potential difference of 70kV in a vacuum. Calculate the maximum speed acquired by the electron (electronic charge = -1.6 x 10-19; mass of an electron = 9.1 x 10-31kg)

a

3.00 x 108ms-1

b

2.46 x 108ms-1

c

1.57 x 108ms-1

d

1.32 x 108ms-1

e

1.11 x 108ms-1

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Correct Option
c

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Discussions (3)

D spark
10 years ago

What if we find our energy using 1/2QV instead of using eV

Nacar P
10 years ago

Cos i go get tyme ni o

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