A 3.00 N metal bar 1.50 m long with a resistance of 10.0 ohms rests on conducting wires in the circuit shown in the figure. The bar is in a uniform magnetic field of 1.60 T and is connected to the circuit wires and can slide freely. What is the acceleration of the bar just after the switch is closed?
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A 3.00 N metal bar 1.50 m long with a resistance of 10.0 ohms rests on conducting wires in the circuit shown in the figure. The bar is in a uniform magnetic field of 1.60 T and is connected to the circuit wires and can slide freely. What is the acceleration of the bar just after the switch is closed?
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- The figure shows a wire with a loop in it. The current through the wire is 12.0 A and the diameter of the loop is 5.50 cm. What is the magnetic field at the center of the loop?Consider a 150 turn square loop of wire 17.5 cm on a side that carries a 46 A current in a 1.75 T field a. What is the maximum torque on the loop of wire in N⋅m? b. What is the magnitude of the torque in N⋅m when the angle between the field and the normal to the plane of the loop θ is 9°?Young domestic chickens have the ability to orient themselves in the earth's magnetic field. Researchers use a set of two coils to adjust the magnetic field in the chicks' pen. The figure below shows the two coils, whose centers coincide, seen edge-on. The axis of coil 1. is parallel to the ground and points to the north; the axis of coil 2 is oriented vertically. Each coil has 43 turns and a radius of 1.0 m. At the location of the experiment, the earth's field had a magnitude of 5.6 x 10-5 T and pointed to the north, tilted up from the horizontal by 61°. If the researchers wished to exactly cancel the earth's field, what currents would they need to apply in coil 1, and in coil 2? 13 Im IAST Coil 1- Coil 2 61° * North The centers of the coils coincide. Up Z B
- The force on a wire is a maximum of 4.50×10−2 NN when placed between the pole faces of a magnet. The current flows horizontally to the right and the magnetic field is vertical. The wire is observed to "jump" toward the observer when the current is turned on. A). What type of magnetic pole is the top pole face? B). If the pole faces have a diameter of 19.0 cm , estimate the current in the wire if the field is 0.180 T. C). If the wire is tipped so that it makes an angle of 12.0∘ with the horizontal, what force will it now feel? [Hint: What length of wire will now be in the field?] Please show all steps :) THANK YOUA circuit is made with a resistor of resistance 25 ohms and a movable bar with length 15 cm moving to the left with speed 8 m/s. The whole circuit is in a magnetic field B = 1.5 T (into page). Use this set up to answer the following questions. What is the magnetic force on the bar in Newtons? Answer to 4 decimal places.A current of 20.0 mA is maintained in a single circular loop of 2.20 m circumference. A magnetic field of 0.410 T is directed parallel to the plane of the loop. (a) Calculate the magnetic moment of the loop. If you know the circumference of a circle, how do you find the area? mA. m² (b) What is the magnitude of the torque exerted by the magnetic field on the loop? A magnetic dipole will tend to orient so that the plane of the loop is perpendicular to the magnetic field. mn. m