A positive charge 'q' of mass 'm' is moving along the +x axis. We wish to apply a uniform magnetic field B for time Delta t so that the charge reverses its direction crossing the y axis at a distance d. Then :

A positive charge 'q' of mass 'm' is moving along the +x axis. We wish

1.	A positive charge 'q' of mass 'm' is moving along the +x axis. We wish to apply a uniform magnetic field B for time Delta t so that the charge reverses its direction crossing the y axis at a distance d. Then :
Answer» `b=(m upsilon)/(2 QD) and DELTAT= ( PI d )/( 2 upsilon )` `B=(m upsilon )/( qd) and Deltat= (pi d )/( upsilon)` `B= (2m upsilon )/( qd) and Deltat = (pi d )/( upsilon )` `B=( 2m upsilon )/(qd ) and Delta t = ( pid)/( 2 upsilon )` Answer :A

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A positive charge 'q' of mass 'm' is moving along the +x axis. We wish to apply a uniform magnetic field B for time Delta t so that the charge reverses its direction crossing the y axis at a distance d. Then :

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