Question

A negative charged particle falling freely under gravity enters a region having horizontal magnetic field pointing towards north. The particle will be deflected towards-

• A. East
• B. West
• C. North
• D. South

Answer 1

The correct option is B West

Given that, $\overrightarrow{V}$ is pointing downwards and is towards North.
As magnetic force is given by
${\overrightarrow{F}}_m=q(\overrightarrow{V}\times \overrightarrow{B})$
Using right - hand thumb rule. For negative change, the force wire towards west.