Thefigure shows a wire that has been bent into a semicircular arc of radius r = 12.0 cm, centered at point 0. Astraight wire segment OP can rotate around O and makes .contact with the arc at point P so that it slides without friction on it. Another rectilinear segment of immobile wire 0Q completes the conductive loop. All three wires are made of copper and have a cross-sectional area of 1.50 mm2. The loop is in a region where there is a uniform magnetic field of magnitude B = 0.250 T and direction out of the plane of the figure. The wire OP begins to move from rest at the instant that it forms an angle e = 0 with the stationary wire 0Q and has a constant angular acceleration of 14 rad/s2. • The radius of semicircular arc is r = 12.0 cm. • The cross sectional area of wire is a - 1. 50 mm?. • The magnetic field applied to wire is B = 0. 250 T. • The angular acceleration of wire is a = 14 rad/s?. a) Find the resistance of the loop as a function of the angle 8 formed between the rectilinear segments OP and 0Q.
Thefigure shows a wire that has been bent into a semicircular arc of radius r = 12.0 cm, centered at point 0. Astraight wire segment OP can rotate around O and makes .contact with the arc at point P so that it slides without friction on it. Another rectilinear segment of immobile wire 0Q completes the conductive loop. All three wires are made of copper and have a cross-sectional area of 1.50 mm2. The loop is in a region where there is a uniform magnetic field of magnitude B = 0.250 T and direction out of the plane of the figure. The wire OP begins to move from rest at the instant that it forms an angle e = 0 with the stationary wire 0Q and has a constant angular acceleration of 14 rad/s2. • The radius of semicircular arc is r = 12.0 cm. • The cross sectional area of wire is a - 1. 50 mm?. • The magnetic field applied to wire is B = 0. 250 T. • The angular acceleration of wire is a = 14 rad/s?. a) Find the resistance of the loop as a function of the angle 8 formed between the rectilinear segments OP and 0Q.
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a) Find the resistance of the loop as a function of the angle formed between the rectilinear segments OP and OQ.
Transcribed Image Text:B
Transcribed Image Text:Thefigure shows a wire that has been bent into a semicircular arc of radius r = 12.0 cm,
centered at point 0. A straight wire segment OP can rotate around 0 and makes contact with
the arc at point P so that it slides without friction on it. Anotherrectilinear segment of
immobile wire 0Q completesthe conductive loop.
All three wires are made of copper and have a cross-sectional area of 1.50 mm2. The loop is in
a region where there is a uniform magnetic field of magnitude B = 0.250 T and direction out of
the plane of the figure.
The wire OP begins to move from rest at the instant that it forms an angle e = 0 with the
stationary wire 0Q and has a constant angular acceleration of 14 rad / s2.
The radius of semicircular arc is y = 12. 0 cm.
The cross sectional area of wire is a = 1. 50 mm?.
• The magnetic field applied to wire is B = 0. 250 T.
• The angular acceleration of wire is a =
14 rad/s?.
a) Find the resistance of the loop as a function of the angle e formed between the rectilinear
segments OP and 0Q.
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