In the figure below, a metal bar sitting on two parallel conducting rails, connected to each other by a resistor, is pulled to the right with a constant force of magnitude Fann = 1.25 N. The friction between the bar and rails is negligible. The resistance R = 8.00 0, the bar is moving at a constant speed of 1.85 m/s, the distance between the rails is e, and a uniform magnetic field B is directed into the page. (a) What is the current through the resistor (in A)? (b) If the magnitude of the magnetic field is 3.00 what is the length e (in m)? m (c) What is the rate at which energy is delivered to the resistor (in W)?

Introductory Circuit Analysis (13th Edition)
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In the figure below, a metal bar sitting on two parallel conducting rails, connected to each other by a resistor, is pulled to the right with a constant force of magnitude Fnn
resistance R = 8.00 0, the bar is moving at a constant speed of 1.85 m/s, the distance between the rails is {, and a uniform magnetic field B is directed into the page.
= 1.25 N. The friction between the bar and rails is negligible. The
ER
Fapp
(a) What is the current through the resistor (in A)?
A
(b) If the magnitude of the magnetic field is 3.00 T, what is the length e (in m)?
(c) What is the rate at which energy is delivered to the resistor (in W)?
(d) What is the mechanical power delivered by the applied constant force (in W)?
W
Transcribed Image Text:In the figure below, a metal bar sitting on two parallel conducting rails, connected to each other by a resistor, is pulled to the right with a constant force of magnitude Fnn resistance R = 8.00 0, the bar is moving at a constant speed of 1.85 m/s, the distance between the rails is {, and a uniform magnetic field B is directed into the page. = 1.25 N. The friction between the bar and rails is negligible. The ER Fapp (a) What is the current through the resistor (in A)? A (b) If the magnitude of the magnetic field is 3.00 T, what is the length e (in m)? (c) What is the rate at which energy is delivered to the resistor (in W)? (d) What is the mechanical power delivered by the applied constant force (in W)? W
Two parallel horizontal rails are
vertically aligned and connected
on their teft ends by a wire. A
resistor R is in the middle of the
wire. The rails are separated by
a distançe e. A bar lies vertically
across the middle of therails, to
the right of the wire. An arrow
extends from the
labeled F
app
middle of the bar to the right.
(i
Transcribed Image Text:Two parallel horizontal rails are vertically aligned and connected on their teft ends by a wire. A resistor R is in the middle of the wire. The rails are separated by a distançe e. A bar lies vertically across the middle of therails, to the right of the wire. An arrow extends from the labeled F app middle of the bar to the right. (i
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