Question

Imagine that you are sitting in a chamber with your back to one wall. An electron beam moving horizontally from back wall towards the front wall is deflected by a strong magnetic field to your right side. What is the direction of magnetic field?

Answer 1

R.E.F image

Solution Let the situated be shown as

As the electron is deflected

in right way s, the

magnetic field force

will also be in right

direction we know

$f=a\overrightarrow{V}\times \overrightarrow{B}$

Here $f=-e\overrightarrow{v}\times \overrightarrow{B}=e(\overrightarrow{B}\times \overrightarrow{V})$

By right hand - thumb rule $\overrightarrow{B}$

is directed from my head to for

(into the 12 ags here).