Consider a circular loop that is threaded by a magnetic field that points into the page. The magnetic field stays constant while the loop shrinks. State the direction of the induced current. (XXX O Clockwise Counterclockwise XXX
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- The magnetic force on the moving rod in a slidewiregenerator has magnitude 0.0600 N at an instant when theresistance of the circuit is 0.750 Ω. The rod is 0.190 m long and themagnetic field (which is perpendicular to the plane of the generator) hasmagnitude 0.550 T. Find the speed of the rod.A loop of wire sits in an external magnetic field as shown (in other words, the field shown in the picture is NOT a field created by the loop). If the induced current flows out of the top and into the bottom, how is the magnitude of the external field changing? Impossible to tell unless we know [(B)\vec] The magnitude is decreasing The magnitude is constant The magnitude is increasingA 2 meter-long bar is being moved to the right at a constant speed. The bar is sliding on aframe that includes a resistor with R = 3.25 Ω. There is also a uniform 5.75-T magneticfield, directed into the page. At what speed should the bar be moved to produce a currentof 0.800 A in the resistor
- Imagine that we have a rectangular loop of wire (with a total resistance of 1.6 ohms) placed in a magnetic field that dies off as: 0.3*e-10t T into the page. What is the induced current in the coil at 0.002 s? The loop has a length of 1.7 m and a width of 1.7 m.Consider a conducting loop placed on a horizontal plane in a region of uniform vertical magnetic field directed downward. If the magnitude of the magnetic field begins to decrease, what will be the direction of the induced current in the loop, as viewed from above? O Counterclockwise, so that the magnetic field of the loop is downward. O Counterclockwise, so that the magnetic field of the loop is upward. O Clockwise, so that the magnetic field of the loop is upward. O There will be no induced current, so that the loop does not have a magnetic moment. O Clockwise, so that the magnetic field of the loop is downward.The figure below shows a top view of a bar that can slide on two frictionless rails. The resistor is R = 5.60 0, and a 2.50-T magnetic field is directed perpendicularly downward, into the page. Let { = 1.20 m. Bin R app (a) Calculate the applied force required to move the bar to the right at a constant speed of 2.30 m/s. N (to the right) (b) At what rate is energy delivered to the resistor? W
- The magnetic field is pointing out of the board everywhere in space.The metal bar on top of the rails is being moved by an external agentto the right. What is the direction of the induced current on the bar?A section of conductive wire with a mass of 0.036 kg and a length of 0.38 m is placed on a frictionless inclined plane at an angle of 45º with respect to the horizontal. At all points there is a uniform horizontal magnetic field 0.41. Determine the magnitude and direction of the current in the wire necessary for the wire to remain at rest. Get the answer in Amperes