Question

There is a uniform electric field of strength 10 V/m along y-axis. A body of mass I g and charge 10 Cis projected into the field from origin along the positive x-axis with a velocity 10 m/s. Its speed in m/s after 10s is (neglect gravitation) (A) 10 (B) 52 (D) 20 (C) 1012​

Answer 1

Answer:

good morning have a nice day

Answer 2

Answer:

Correct option is

C

10

2

Velocity in x direction remains constant i.e, v

x

=10 m/s

Now acceleration is only in y direction

a=

m

qE

a=

1×10

−3

10

3

×10

−6

∴ Velocity in y direction v

y

=a×t

v

y

=10m/s

∴v=10

x

^

+10

y

^

∣v∣=10

2