Below are 3 situations with a charge q in a magnetic field. Based on the directi

Question

Below are 3 situations with a charge q in a magnetic field. Based on the direction of travel and the field what is the direction of the force on each charge? Be careful when considering he sign of the charge Two charges with magnitude 1 times 10^-6 C and opposite signs travel into a uniform magnetic field as shown with a velocity of 200 m/s. The magnetic field is directed into the page with a magnitude of 5 T (Tesla). How far apart must the charges be from each other so that the travel straight through the field undefelected?

Explanation / Answer

7.

the magnetif force is F = q*v*B*sin(theta)

in first case the direction of force is perpendicular

to both velocity and magnetic field and in the plane of velocity

in second case F = 0

in third case the force is in to the plane

8.

when a charged particle enters into a magnetic field perpendicularly

then it follows a circular path

10.

for the charges at

top ( turns left)
left ( turns top)
bottom (turns left)
right ( turns bottom)

11.

a) the force is towards wire

b) the force is zero

c) the force is parallel to wire

12.

they repel each other

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