Q3. A square loop carrying a current I₁ = 4 A is bisected by a very long straight conductor which carries a current 1₂ = 15 A as shown in Figure 2. If a = 1 m, find the net force acting on the loop. 12 J I₁ + straight long conductor square loop Figure 2
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- The South Pole of a magnet is leaving a loop, what is the direction of current and does it attract or repel the magnet?In the figure below, the blue wire has a current I = 25 A. The red loop is a square with sides that are 42 cm long and it has a current of 94 A. The distance between the blue wire and wire BC is 4.5 cm. Determine the force the blue wire exerts on wire BC and the force the blue wire exerts on wire AD. www B Force of blue wire on BC = direction of force on BC = Choose direction ✓ Force of blue wire on AD = direction of force on AD = Choose direction3. DETAILS MY NOTES You are working during the summer at a company that builds theme parks. The company is designing an electromagnetic propulsion system for a new roller coaster. A model of a substructure of the device appears in the figure below. The rod is of length d = 1.00 m and mass m = 0.700 kg. The rod carries a current I = 100 A in the direction shown and rolls along the rails of length L = 15.0 m without slipping. The entire system of rod and rails is immersed in a uniform downward-directed magnetic field with magnitude 8 = 1.90 T. The electromagnetic force on the rod is parallel to the rails, causing the rod to roll to the right in the figure. When a full-scale device is produced, this rod will represent the axle of wheels on which the car and i on the grounds of the company. By projecting the rod from the rails in a horizontal direction from a height h = 1.80 m, the projection speed can be determined from how far from the ends of the rails the rod hits the ground. Your…
- Q2.4 Three wires are laid parallel to each other. Two are fixed (1 and 3) and one is moveable (2). They are all on a frictionless horizontal surface. Determine what will happen to wire 2 when the currents are all turned on simultaneously. Length of Wire fixed wire 20 cm Ij = 2A 12 = 4 A 2 moveable wire l3 = 1A 10 cm fixed wire 100 cm1. Here let's analyze the demo from lecture with two parallel wires. a) We will start with the case that the currents IR and IL are in the same direction: e IL IR d If the length of the wires is much greater than the distance between the wires (l >> d), find an approximate expression for the magnetic force on each wire. Are the forces attractive or repulsive? b) What would happen to the direction of the forces if you switched the direction of IR or IL? Make sure to explain your answer.1. A wire runs from north to south a. A compass needle placed above the wire points with its north pole toward the east. In what direction is the current flowing? b. If a compass is placed underneath the wire, in which direction will its needle point? 2. What will be the direction of the magnetic field if the current is due upward? 3. How does the magnitude of the current passing through the conductor affect the magnetic field?
- Which of the following statements is TRUE about mapping magnetic field lines around a bar magnet using a compass? A. The experiment is wrong because the magnetic field being detected by the compass is the resultant of the bar magnet's magnetic field and the Earth's magnetic field. B. The magnetic field being detected by the compass is the resultant of the bar magnet's magnetic field and the Earth's magnetic field. C. The magnetic field near a bar magnet is very much larger compared to the Earth's magnetic field, thus, the mapped magnetic field using a compass is indeed from the bar magnet only. D. The magnetic field lines around a bar magnet are effectively estimated by the experiment because the concrete walls isolate the inside of a laboratory or a house to the Earth's magnetic field. E. The intensity of the bar magnet's magnetic field can be determined by the compass.Wire with current I yA Electron A long straight wire carries a current of 43.6 A. An electron, traveling at 1.00 x 10' m/s, is 7.70 cm from the wire. What force acts on the electron if the electron's velocity is directed toward the wire? If the direction of force is perpendicular to the current, enter a negative value. N