1. Faraday's Law a. Look at the figure to the right. The magnetic field is constant with a strength of 0.255T. A conducting bar is L=10cm long and moving to the left with a constant speed of v=35m/s. The conducting bar slides over two metal rails with the right end of the rails connected with a b. Look at the figure to the right. It is the same rail system as part a with L=10cm and V=35m/s. However, the constant magnetic field has been replaced with a long straight wire with 50 amps (i=50A). If the top rail is 4cm (a=4cm) from the wire, What direction, clockwise or counterclockwise, will the current flow? What is the induced EMF? L X ● conducting bar(bus). What direction, clockwise or counterclockwise, will the current flow? What is the induced EMF? X . ● XXX X X B ххххх ● ● ● · ● .
1. Faraday's Law a. Look at the figure to the right. The magnetic field is constant with a strength of 0.255T. A conducting bar is L=10cm long and moving to the left with a constant speed of v=35m/s. The conducting bar slides over two metal rails with the right end of the rails connected with a b. Look at the figure to the right. It is the same rail system as part a with L=10cm and V=35m/s. However, the constant magnetic field has been replaced with a long straight wire with 50 amps (i=50A). If the top rail is 4cm (a=4cm) from the wire, What direction, clockwise or counterclockwise, will the current flow? What is the induced EMF? L X ● conducting bar(bus). What direction, clockwise or counterclockwise, will the current flow? What is the induced EMF? X . ● XXX X X B ххххх ● ● ● · ● .
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
Transcribed Image Text:1. Faraday's Law
a. Look at the figure to the right. The
magnetic field is constant with a strength
of 0.255T. A conducting bar is L=10cm long
and moving to the left with a constant
speed of v=35m/s. The conducting bar
slides over two metal rails with the right
end of the rails connected with a
T
b. Look at the figure to the right. It is the same rail
system as part a with L=10cm and V=35m/s.
However, the constant magnetic field has been
replaced with a long straight wire with 50 amps
(i=50A). If the top rail is 4cm (a=4cm) from the
wire, What direction, clockwise or
counterclockwise, will the current flow? What is
the induced EMF?
conducting bar(bus). What direction, clockwise or counterclockwise, will the current
flow? What is the induced EMF?
XX
X
X
XX
●
X
B
.
X X
●
.
• 100
●
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Step 1: Know the Faraday's law of electromagnetic induction and Lenz's law:
VIEWStep 2: (a) Find the expression for the emf induced in the loop:
VIEWStep 3: (a) Calculate the magnitude of the emf induced in the circuit:
VIEWStep 4: (a) Determine the direction of the current induced in the loop:
VIEWStep 5: (b) Find the expression for the emf induced in the loop:
VIEWStep 6: (b) Calculate the emf induced in the loop:
VIEWStep 7: (b) Determine the direction of the current induced in the loop:
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