If the maximum value of the current is 3√2 A, what will be the value of the average current?
a) `10/π A`
b) `5/π A`
c)` 30/π A`
d) `6/π A`

Explanation

Given that, `vecF=vec(uz)xxvecA and vec(mg)` act on the particle.
For the paeticle to move undeflected with constant velocity net force should be zero.
` :. (vecuxxvecA)+vec(mg)=0`
` or (vecuxxvecA)=-vec(mg)
because ` (vecuxxvecA)` is to the place containing `vecu and vecA, vecu` should be in the xz plane.
Again ` uA sintheta = mg`
` :. u= (mg)/(A sintheta)`
u will be minimum, when `sin theta = 1`,
`rarr theta = 90^0`
`:. u_min = (mg)/A along Z- axis.