The flexible loop in the figure below has a radius of 14.0 cm and is in a magnetic field of magnitude 0.180 T. The loop is grasped at points A and B and stretched until its area is nearly zero. If it takes 0.180 s to close the loop, what is the magnitude of the averag induced emf in it during this time interval? mv B
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- R A 50 cm long metal rod moves along the two rails in a plane of the circuit shown and is placed perpendicular to the magnetic field ( indicated by x) B = 0.15 T. If R = 3.0 ohm and the uniform speed v = 2.0 m/s, what rate is the energy dissipated in the resistor? O 1.25 W O 7.5 mW 4.9 mW 2.26 mWThe figure below shows a flexible loop of metal wire with a radius of 10.0 cm. It lies in a magnetic field pointing into the page with a magnitude of 0.110 T. A lab TA grabs the loop at points A and B and rapidly pulls in opposite directions until the loop folds up, such that its area becomes zero. The change in area occurs in a span of 0.190 s. What is the average induced emf (in mV) in the loop over this time span? mVThe flexible loop in Figure has a radius of 32.1 cm and is in a magnetic field of magnitude 0.150 T. The loop is grasped at points A and B and stretched until its area is nearly zero. If it takes 0.200 s to close the loop, what is the magnitude of the average induced emf ( in units of mV) in it during this time interval? A В Select one: A. 201.57 B. 139.74 C. 345.83 D. 242.79 E. 448.87
- A 4.0-cm-diameter loop with resistance 0.11 ohms surrounds a 2.0-cm-diameter solenoid. The solenoid is 10 cm long, has 100 turns, and carries the current shown in the graph. A positive current is cw when seen from the left. Determine the current in the loop at the following times. t = 0.5s = ? uA t = 1.5s = ? uA t = 2.5s = ? uANEED IN RUSH THANKSThe figure below shows a top view of a bar that can slide on two frictionless rails. The resistor is R = 5.80 Ω, and a 2.50-T magnetic field is directed perpendicularly downward, into the page. Let ℓ = 1.20 m. Calculate the applied force required to move the bar to the right at a constant speed of 70m/s. At what rate is energy delivered to the resistor?
- The figure below displays a circular loop of aluminum wire in a uniform magnetic field pointing into the page. The radius of the loop is 11.0 cm and the magnitude of the field is 0.170 T. You grab points A and B and pull them in opposite directions, stretching the loop until its area is nearly zero, taking a time of 0.180 s to do so. What is the magnitude of the average induced emf in the loop (in mV) during this time? X X X A x x x x ☺ x x x x В * * x x x Imv X x x x XBX X x X X x (i)The figure below shows a flexible loop of metal wire with a radius of 15.0 cm. It lies in a magnetic field pointing into the page with a magnitude of 0.130 T. An engineer grabs the loop at points A and B and rapidly pulls in opposite directions until the loop folds up, such that its area becomes zero. The change in area occurs in a span of 0.220 s. A В What is the average induced emf (in mV) in the loop over this time span? mVA 1000 turn coil is moved from a location where there the magnetic field is 25.00 T to a location wherethere is no magnetic field. It takes 0.5 s to move the coil and the induced voltage. The induced voltage is 50.00volts. What is the cross-sectional area of the coil in ?2? What is the diameter of the coil in units of cm?
- The flexible loop in the figure below has a radius of 11.0 cm and is in a magnetic field of magnitude 0.160 T. The loop is grasped at points A and B and stretched until its area is nearly zero. If it takes 0.180 s to close the loop, what is the magnitude of the average induced emf in it during this time interval? mv A ВA car generator turns at 400 rpm when the engine is idling. Its 300 turn, 5.1 cm by 8.15 cm rectangular coil rotates in an adjustable magnetic field so that it can produce sufficient voltage even at low rpms. What is the field strength (in T) needed to produce a 27 V peak emf?The figure below displays a circular loop of metal wire in a uniform magnetic field pointing into the page. The radius of the loop is 13.0 am and the magnitude of the field is 0.160 T. You grab points A and B and pull them in opposite directions, stretching the loop until its area is nearly zero, taking a time of 0.180 s to do so. What is the magnitude of the average induced emf in the loop (in mV) during this time? x x * ↑