(a) The figure below shows bo paralel conducting rails 11.6 cm apart. connected by a resistor with resistance R,- S.00 A. Two metal rods with resistances R,- 13.0 0 and R,- 15.0 0 slide along the rails with negligible friction. Rod R, slides to the left at constant speed v,4.00 m/s. while rod R, slides at speed v,-2.00 m/s. The rods and rails are in the presence of a uniform magnetic field pointing into the page. perpendicular to the plane of the rails, with a magnitude of S- 0.0100 T. What are the magnitude (in pA) and direction of the current through resistor R, magnitude 278 x What are the bve motional emfs? what are their directions, based on the veiocities of the rods and the direction of the fiele? From this, can vou construct a circuit diaoram that allows vou to apply Kirchhoff's lava? Can vou use Kirchhoff's laa to set up a svatem of equations that alov vou to selve for the current through R.? Be careful of signs. A direction upward (b) what If? What are the magnitude (in pA) and direction of the current through resistor R, f the rods move invard. instead of oubrard. with the same speeds as in part (a)? magnitude direction -Select
(a) The figure below shows bo paralel conducting rails 11.6 cm apart. connected by a resistor with resistance R,- S.00 A. Two metal rods with resistances R,- 13.0 0 and R,- 15.0 0 slide along the rails with negligible friction. Rod R, slides to the left at constant speed v,4.00 m/s. while rod R, slides at speed v,-2.00 m/s. The rods and rails are in the presence of a uniform magnetic field pointing into the page. perpendicular to the plane of the rails, with a magnitude of S- 0.0100 T. What are the magnitude (in pA) and direction of the current through resistor R, magnitude 278 x What are the bve motional emfs? what are their directions, based on the veiocities of the rods and the direction of the fiele? From this, can vou construct a circuit diaoram that allows vou to apply Kirchhoff's lava? Can vou use Kirchhoff's laa to set up a svatem of equations that alov vou to selve for the current through R.? Be careful of signs. A direction upward (b) what If? What are the magnitude (in pA) and direction of the current through resistor R, f the rods move invard. instead of oubrard. with the same speeds as in part (a)? magnitude direction -Select
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Transcribed Image Text:(a) The figure below shows two parallel conducting rails 11.6 cm apart, connected by a resistor with resistance R, = 5.00 n. Two metal rods with resistances R, = 13.0 0 and R., = 15.0 0 slide along the rails with negligible friction. Rod R, slides to the left at constant speed v, = 4.00 m/s, vwhile rod R, slides at speed v, = 2.00 m/s. The rods and rails are in the
presence of a uniform magnetic field pointing into the page, perpendicular to the plane of the rails, with a magnitude of B = 0.0100 T.
in
X2x x x
* Ry x
R,
What are the magnitude (in µA) and direction of the current through resistor R,?
278
What are the two motional emfs? What are their directions, based on the velocities of the rods and the direction of the field? From this, can you construct a circuit diagram that allows you to apply Kirchhoff's laws? Can you use Kirchhoff's laws to set up a system of equations that allows you to solve for the current through R,? Be careful of
magnitude
signs. HA
direction
upward
(b) What If? What are the magnitude (in HA) and direction of the current through resistor R, if the rods move inward, instead of outward, with the same speeds as in part (a)?
magnitude
HA
direction
---Select--
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