A bar slides to the right at a constant speed of 2.1 m/s on two frictionless rails. The resistance of resistor R is 5.2 0, and a 2.5 T constant magnetic field is directed perpendicularly downward, into the page. Let { = 1.2 m. Bin R app (a) Find the current passing through the resistor. I = (b) The direction of magnetic force on the moving bar is O No magnetic force O Right O Left O Out of the page O Into the page x x X x x x x x x x x x x X X x x x x x x x X

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A bar slides to the right at a constant speed of 2.1 m/s on two frictionless rails. The resistance of resistor R is 5.2 Q, and a 2.5 T constant magnetic field is
directed perpendicularly downward, into the page. Let e = 1.2 m.
Bin
x x
app
x x
(a) Find the current passing through the resistor.
A
I =
(b) The direction of magnetic force on the moving bar is
O No magnetic force
O Right
O Left
O Out of the page
O Into the page
1 x x x X x
x x x X X x
x * * x x x
* * x x x x
x x xx X X
x x
Transcribed Image Text:A bar slides to the right at a constant speed of 2.1 m/s on two frictionless rails. The resistance of resistor R is 5.2 Q, and a 2.5 T constant magnetic field is directed perpendicularly downward, into the page. Let e = 1.2 m. Bin x x app x x (a) Find the current passing through the resistor. A I = (b) The direction of magnetic force on the moving bar is O No magnetic force O Right O Left O Out of the page O Into the page 1 x x x X x x x x X X x x * * x x x * * x x x x x x xx X X x x
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