At the instant shown, a particle with a charge of + q is a distance d from a lon
ID: 1597672 • Letter: A
Question
At the instant shown, a particle with a charge of + q is a distance d from a long straight wire and is moving parallel to the wire. A number of changes to this initial situation are described in a - f below. Select from choices A-E how each change will affect the magnetic force on the particle at this instant. This change will: have no effect on the force. increase the magnitude, but not affect the direction of the force. decrease the magnitude, but not affect the direction of the force. alter the direction, but not affect the strength of the force. alter both the magnitude and direction of the force on the charged particle. + q Each change below refers to the initial situation described above: the current in the wire is doubled._____ the direction of the current in the wire is reversed.____ the + q particle is replaced with a + 2q particle with the same mass.______ the + q particle is replaced with a - q particle with the same mass.___ the + q particle is replaced with a particle having triple the mass and the same charge.___ the charged particle's initial velocity is toward the bottom of the page._____Explanation / Answer
1)The current increases ,the magnitude of force increases.
2) The force is inversally proportional to the distance between the point and conductor.
answers:
a) B - the magnitude increases but not affect the direction.
b) A - have no effect on the force.
c) C --decrease the magnitude but not affect hte direction
d) D - alter the direction but not affect the strength of the force.
e) E -alter both the magnitude and direction of the force on the charged particle.
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