Ans: The path of the electron that is travelling with velocity 
at right angle of 
is of circular shape.
It requires a centripetal in nature, 
It is provided by an electrostatic force 
.
![\[\begin{array}{l} \Rightarrow \mathrm{eE}=\frac{\mathrm{mv}^{2}}{\mathrm{r}} \\ \Rightarrow \frac{\mathrm{e}}{\mathrm{m}}=\frac{\mathrm{v}^{2}}{\mathrm{rE}} \end{array}\]](https://www.learnatnoon.com/s/wp-content/ql-cache/quicklatex.com-d877913f22804400f8fd9dcc2c6784e3_l3.png "Rendered by QuickLaTeX.com")
A stream of electrons travelling with speed at right angles to a uniform electric field 
is deflected in a circular path of radius 
Prove that 
at right angles to a uniform electric field is deflected in a circular path of radius Prove that A stream of electrons travelling with speed at right angles to a uniform electric field is deflected in a circular path of radius Prove that
at right angles to a uniform electric field is deflected in a circular path of radius Prove that 
.
)
west of the geographic north. The north tip of the magnetic needle of a dip circle placed in the plane of magnetic meridian points above the horizontal. The horizontal component of the earth’s field is measured to be 
Specify the direction and magnitude of the earth’s field at the location.At a certain location in Africa, a compass points 
and 
carrying currents of 
and 
in the same direction are separated by a distance of 
. Estimate the force on a 
section of wire A.
wire carrying a current of 
is placed inside a solenoid perpendicular to its axis. The magnetic field inside the solenoid is given to be 
. What is the magnetic force on the wire?
and making an angle of 
with the direction of a uniform magnetic field of 
. What is the magnitude of the field 
at a point 
from the wire?
-turns carrying current 
.
is at distance 
from the wire. Find the force acting on the electron if its velocity is directed towards the wire.