Recent content by nickmanc86

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    Why did they use only meter resistance for tau of inductor

    Oh my, of course. Wow I feel dumb now. Thank you very much that definitely makes sense.
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    Why did they use only meter resistance for tau of inductor

    I double checked the problem in the book and it definitely states the switch was closed for 1h and then opened at a time t = 0s. I suppose it is possible there is a typo in the book (it apparently has many). However, correct or not, they proceed to solve it as stated and end up with those...
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    Why did they use only meter resistance for tau of inductor

    Homework Statement http://imgur.com/uLZdBJC 27. The switch has been closed for about 1 h. It is then opened at the time defined as t 0 s. a. Determine the time required for the current iL to drop to 10 μA. b. Find the voltage VL at t 10μs c. Calculate VL at t 5tau. Homework Equations So I...
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    What I thought was a simple AC circuit with a Refrigerator & SSR

    Ya sorry the diagram was not explicit about the ground. Both ends are typical 3 prong Male/Female (respectively) plugs. The ground lead from the male plug, which plugs into the outlet, runs into and is attached to a grounding screw in the box. The same goes for the female plug which runs to the...
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    What I thought was a simple AC circuit with a Refrigerator & SSR

    I am half way through my Electrical Engineering program and have only just started to learn about AC circuits and inductive loads but I did a little reading and went off to try a simple project on my on. A company I work for wanted a switch to turn off their large refrigerator for certain...
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    Acceleration of a conducting bar on rails in a magnetic field

    θ in the first equation would be the angle between the I*L vector and the B vector or the bar and the magnetic field so it should be 30 degrees? For the second equation that would lead me to believe that because this equation originates from F_{b} = q \vec{v} \times \vec{B} it should come...
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    Acceleration of a conducting bar on rails in a magnetic field

    1. In the arrangement shown, a conducting bar of negligible resistance slides along horizontal, parallel, frictionless conducting rails connected as shown to a 4.0-Ω resistor. A uniform 2.5-T magnetic field makes an angle of 30° with the plane of the paper. If L = 80 cm and the mass of the...
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    Calculating Induced EMF for a Changing Magnetic Field Loop

    Thank you so much that totally led me in the correct direction. I took A'(t)=L'*W+W'*L which I substituted in the equation for Induced EMF then plugged in a time of 4 and came to the correct answer of 3.6mV.
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    Calculating Induced EMF for a Changing Magnetic Field Loop

    1. A rectangular wire loop (length 60 cm, width 40 cm) lies completely within a perpendicular and uniform magnetic field of magnitude of 0.5 T. If the length of the loop starts increasing at a rate of 20 mm/s at time t = 0, while the width is decreasing at the same rate, what is the magnitude...
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