From ohms law the current flowing through the

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From Ohm’s law, the current flowing through the resistor is Calculate the applied force required to move the bar to the right at a constant speed of 7 m / s. 007 (part 2 of 2) 10 points At what rate is energy dissipated in the resis- tor?
Felder, Jacob – Homework 11 – Due: Nov 28 2006, 9:00 pm – Inst: Vitaly 5 keywords: 008 (part 1 of 1) 10 points A magnetic field that is decreasing with time is directed out of the page and passes through a circular loop of wire in the plane of the page. Which of the following is true of the induced current in the wire loop? 1. It is zero in magnitude. 2. It is directed into the page. 3. It is clockwise in direction. 4. It is counterclockwise in direction. cor- rect 5. It is directed out of the page. Explanation: Lenz’s law can be used to judge the direc- tion of the induced current, which states that the polarity of the induced emf is such that it tends to produce a current that will cre- ate a magnetic flux to oppose the change in magnetic flux through the loop. In this problem, since the magnetic field is decreasing, the induced magnetic field should be in the same direction, namely pointing out of the plane of the page, so the direction of the induced current must be counterclockwise. keywords: 009 (part 1 of 1) 10 points