TS EAMCET Medical 8 May 2019 Shift 2 Paper

An electron is moving through a uniform magnetic field given by

→

B

= α[

^

i

+3

^

j

] T, where α is a constant. At some instant, the electron has velocity

→

v

= (

^

i

+2

^

j

) m/s. If the magnitude force acting on the electron is (3.2 × 10−19 N)

^

k

, then the value of α will be