A conductor of length `20cm` is placed (i) parallel (ii) perpendicular (iii) inclined at an angle `30^@`, to a uniform magnetic field of `2T`. If the charge of `10C` passes through it in `5s`, find the force experienced by the conductor.

Answer

(i) zero, (ii) `0*8N` (iii) `0*4N`

Explanation

Use, `F=IlBsin theta`, Here, `l=0*20m`,
`I=q/t=10/5=2A`, `B=2T`
(i) `theta=0^@` (ii) `theta=90^@` (iii) `theta=30^@`