o thin, vertical conductors, and a uniform magnetic field Consider the system pi
ID: 1442748 • Letter: O
Question
o thin, vertical conductors, and a uniform magnetic field Consider the system pictured in the figure below. A 16.4-cm horizontal wire of mass 13.6 g is placed between two thin, vertical conductors, and a uniform magnetic field acts perpendicular to the page. The wire is free to move vertically without friction on the two vertical conductors. When a 4.95-A current is directed as shown in the figure, the horizontal wire moves upward at constant velocity in the presence of gravity. (a) What forces act on the horizontal wire? (Select all that apply magnetic force electric force gravitational force (b) Under what condition is the wire able to move upward at constant velocity?Explanation / Answer
(a)
Magnetic Force & Gravitational Force.
(b)
When Magnetic Force = Gravitational Force, Wire will move upward with constant velocity.
(c)
Magnetic Force, Fb = I*L*B
Gravitational Force, Fg = m*g
Equating them,
I*L*B = m*g
4.95 * 16.4*10^-2 *B = 13.6*10^-3 * 9.8
B = 0.164 T
Direction, = Out of the Page.
(d)
The Rod will start accelerating Downwards, becoz Gravitational Force > Magnetic Force.
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