Chapter 19 - Magnetism - Learning Path Questions and Exercises - Exercises - Page 691: 4

a) $F=qvBsin\theta$ Based on the given conditions , as per the right hand rule, force will be into the page (1) b) $F=qvB$ or, $B=\frac{F}{qv}=\frac{20}{0.25\times2\times100}=0.4T$

a) $F=qvBsin\theta$ Based on the given conditions , as per the right hand rule, force will be into the page (1) b) $F=qvB$ or, $B=\frac{F}{qv}=\frac{20}{0.25\times2\times100}=0.4T$