First slide

Electric field

Question

A particle of mass m and charge q is released from rest in a uniform electric field. If there is no other force on the particle, the dependence of its speed $ν$ on the distance x travelled by it is correctly given by (graphs are schematic and not drawn to scale)

Easy

A
B
C
D

Solution

$\begin{array}{l} F o r c e = F = q E \\ \Rightarrow m a = q E \\ \Rightarrow a = \frac{q E}{m} \\ U \sin g e q u a t i o n o f k i n e m a t i c s, \\ v^{2} = u^{2} + 2 a x \\ \Rightarrow v^{2} = \frac{2 q E}{m} x \end{array}$

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App