Question

3.
An electron moves with speed 2 x 10 ms
along the positive x-direction in the presence
of a magnetic induction B= i +49 - 3K tesla. The
magnitude of the force experienced by the
electron in newton is (charge on the electron =
1.6 x 10-19C)
ve 2x105 i
1) 1.18 x 10-13 2) 1.28 x 10-13
3) 1.6 x 10-13
4) 1.72 x 10-13​

Answer 1

Answer:

The  magnitude of the force experienced by the  electron in newton is charge on the electron = 1.6 x 10^(-13) N

Explanation:

An electron moves with speed 2 x 10 ms  along the positive x-direction in the presence   of a magnetic induction B= i +49 - 3K tesla.

Now, let the force be S,

Then

S= q[ a x b]

=1.6×10^(−19) [(2×10 iˆ) ×(iˆ+4jˆ−3kˆ) ]  

where q=

=1.6×10^(−19) [8×10 kˆ +6×10 jˆ]

Thus,

S =1.6×10^(−19)×10^6

     =1.6×10^(−13)N