Consider two sections of wires with currents as shown. Select T-True, F-False. I

Question

Consider two sections of wires with currents as shown. Select T-True, F-False. If the first is T and the rest F, enter TFFFF. A) If a positively charged particle were placed at rest at point P (i.e. sitting just outside the short wire), it would feel zero force from magnetic fields B) If the short wire were moved further away from the long wire, the net force on it would be precisely the same. C) The force on the short wire due to the long wire is toward the left. D) The magnetic field of the long wire points into the paper at the location of the short wire. E) If the short wire were free to rotate about its fixed center (P), from the position shown, its inital rotation would be counter-clockwise.

Explanation / Answer

A) If the short wire were free to rotate about its fixed center (P),from the position shown, its inital rotation would be counter-clockwise. FALSE

B) The force on the short wire due to the long wire is toward the left.False
C) If the short wire were moved further away from the long wire, the net force on it would be smaller. FALSE
D) If a positively charged particle were placed at rest at point P (i.e. sitting just outside the short wire), it would feel zero forcefrom magnetic fields TRUE
E) The magnetic field of the long wire points into the paper at the
location of the short wire..True

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