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September 16, 2014

Homework Help: Physic please check

Posted by Mary on Monday, November 5, 2007 at 9:24pm.

A +6.00 ÁC charge is moving with a speed of 7.00 x 10^4 m/s parallel to a very long, straight wire. The wire is 5.00 cm from the charge and carries a current of 63.0 A in a direction opposite to that of the moving charge. Find the magnitude and direction of the force on the charge.
___________ mN


B = (4pi x 10^-7)/ 2piR

F = q0 v B sin theta

F = (0.000006)(70000)(0.000001257)(63.0)(1)/ 0.3142

F = 0.000033255 / 0.3142

F = 1.0584 x 10^-4 N

F = 1.0584 x 10^-1 mN



_X_ perpendicular to the wire and directed away from it

___ perpendicular to the wire and directed towards it

___ parallel to the current

___ anti-parallel to the current

___ perpendicular to the plane containing both the wire and the charge

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