A loop of wire is located in the x-y plane within a magnetic flux density of B = î 2 cos (6 · 10°t – 2x) µT. The loop is square with corners at (0, 0, 0), (5cm, 0, 0), (5cm, 5cm, 0), (0, 5cm, 0) and a resistance of 100 Q/m. Find the current in the loop.
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- The above figure shows the cross sections of two wires carrying equal magnitude currents of 10 A but in opposite direction (one is into the page, the other is out of the page). The wires are 0.5 m apart (d=0.5 m). Find the magnetic field at point P. Group of answer choices -16 µT upward -8 µT upward -4 µT upward -12 µT downward -14 µT downwardA 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.The loop shown below has a radius of 12 cm and is placed in a magnetic field oriented into the page, as shown. The resistance of the loop is 5 ohms. The magnitude of the magnetic field may be modeled as B(t )=3−2t . Determine the magnitude and direction of the current in the loop at time t = 3 seconds.
- Figure (a) shows a wire that forms a rectangle (W = 19.0 cm, H = 29.0 cm) and has a resistance of 4.50 mQ. Its interior is split into three equal areas, with magnetic fields B and B B 2' The fields are uniform within each region and directly out of or into the page 1, 3. as indicated. Figure (b) gives the change in the z components B, of the three fields with time t; the vertical axis scale is set by Bg = 4.50 µT and Bp = -2.50B5. What are the (a) the magnitude and (b) direction of the current induced in the wire? B5 H B2 t (s) (a) (b) (a) Number i 2.75E-5 Units A (h) COunterclockwise B. (uT)A current I = 3 A is passed through a wire. A second wire of length L = 1 m is moving with velocity v= 285.4 m s¨¹ at a distance d=1 cm perpendicular to the magnetic field generated by the first wire (see sketch below). Calculate the current in the circuit that includes the second wire and a stationary piece of wire (green in the sketch below). Take the resistance in the circuit to be 10 Q2 (Ohm). Consider the magnetic field B to be constant over the range of motion of the second wire (i.e. d » 1 ). For the permeability of vacuum take μo = 1.3×10-6 NA². Provide your answer in milliamperes (mA). Enter your answer in the box below. Wire 1 Wire 2 اد Wire loopA loop of wire with radius r= 0.183 m is in a magnetic field of magnitude B as shown in the figure. The magnetic field is perpendicular to the plane of the loop. B changes from B1= 0.22 T to B2= 7.5 T in Δt = 7.5 s at a constant rate. (a) Express the magnetic flux Φ going through a loop of radius r assuming a constant magnetic field B. (b) Express the change in the magnetic flux going through this loop, ΔΦ, in terms of B1, B2 and r. (c) Express the magnitude of the average induced electric field, E, induced in the loop in terms of ΔΦ, r and Δt.