IIT JEE , AIEEE Forum - Physics , Magnetism - dhaasu magnetism......nice conceptual Q.......

pramod6990

this is a nice problem. of magnetism.............

there is a particle of mass 'm'.....initially located at the origine........a uniform magnetic field Bi is present in space.......the partical is given an initial velocity of v_xi + v_yj...............

find the limiting value of 'B' for which the particle hits an obstacle present at the pt (x,0)..........

accha prob. hai..ull enjoy it if u are doing it for the first time...........none the less keeps giving u pleasure evry time u do such probs.......

madhavedu

what's the answer

I am getting 2pimv_x/qx

pramod6990

bull's eye!!!

good job......take a rate for that.........

eshaan

yes the answer will be $2{\pi}m{v}_{x}/qx$

horizontal distance to be covered =x,since a=0 along X-axis(B parallel)

$x={v}_{x}t->t=x/{v}_{x}$

now for limiting value of B

$2{\pi}m/qB=x/{v}_{x}$

so $B=2{\pi}m{v}_{x}/qx$

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