A conducting rod is moving with a velocity u on two parallel conducting bars, as shown in the figure. The circuit is located in a region of uniform magnetic field B directed out of the page. ¡B: What is the direction of the induced current in the circuit? Select one: Clockwise (CW) Counter-clockwise (CCW)
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- A negatively charged particle is moving with a constant velocity directed to the left through a region of a uniform magnetic field directed into the page as shown in the figure. In which direction must an electric field be applied to keep the particle moving along a straight line?Refer To: Ref 22-2 Which one of the following statements concerning this situation is true? Since the circuit moves with constant speed, the force F does zero work. The induced current flows clockwise around the circuit. As the circuit moves through the field, the field does work to produce the current. If the circuit were replaced with a wooden loop, there would be no induced emf. The temperature of the circuit remains constant.A loop of wire has the shape shown in the drawing. The top part of the wire is bent into a semicircle of radius r = 0.19 m. The normal to the plane of the loop is parallel to a constant magnetic field (p = 0°) of magnitude 0.60 T. What is the change AO in the magnetic flux that passes through the loop when, starting with the position shown in the drawing, the semicircle is rotated through half a revolution? B (into paper) ΔΦ = i x X میرا www I
- A conducting loop has an area of 280 cm² and resistance 15 . It is perpendicular to a spatially uniform magnetic field and carries a 350 mA of induced current. At what rate is the magnetic field changing?I want to generate an average emf of 10 V with a circular coil of wire with diameter 10 cm and 500 coils. How much time should I take to rotate the coil 90 degrees if the coil is in a magnet field of magnitude 9e-3 T? The loop starts flat on the xy plane and the magnetic field at this time is pointed in the positive x direction. The loop rotates about the y-axis. a) 0.00353 s b) 283.32 s c) 7.06E-6 s d) 3.54E-6 sA 1 kg horizontal aluminum bar, 0.1 m long, is pushed by a force F between two vertical metal rods that are 0.1 m apart. A 0.1T magnetic field is directed perpendicular to the plane of the rods as indicated. A 5 Q resistor is connected across the two rods at the bottom. What is the direction of the current through the aluminum bar? Aluminum bar
- Question in the attachmentsIn each of the figures below, a uniform magnetic field B points in the +x-direction. The magnitude of the field is 1.75 T. In each figure, a square loop, shown edge-on, with sides of length = 0.380 m, is oriented within the magnetic field as shown. In the left figure, the loop is oriented vertically, perpendicular to the magnetic field. In the middle figure, it is tilted such that the plane of the loop makes a 60.0° angle with the magnetic field. In the right figure, the loop is oriented horizontally, parallel to the magnetic field. y (b) 60.0° from the magnetic field Wb B What is the magnetic flux (in Wb) through the loop in each of the three cases shown? (a) perpendicular to the magnetic field Wb (c) parallel to the magnetic field Wb B 60.0°The diagram in the figure shows a small magnet placed near a solenoid AB with its north pole N near the end A. Current is switched on in the solenoid by pressing the key K. MAGNET S N A B Solenoid K (a) State the polarity at the ends A and B. (b) Will the magnet be attracted or repelled? Give a reason for your answer.
- A rectangular wire is moving to the right at constant speed, v, in a uniform magnetic field represented by x x. Rank the magnitude of induced current in the wire at the positions shown in the sketch. В c* D B = C > A = D A = D > B = C C > B > A > D A DThe figure below shows a cross section of a long thin ribbon of width w = 5.72 cm that is carrying a uniformly distributed total current i = 3.76 µA into the page. Calculate the magnitude of the magnetic field at a point Pin the plane of the ribbon at a distance d = 2.60 cm from its edge. (Hint: Imagine the ribbon as being constructed from many long, thin, parallel wires.) Number UnitsThe figure shows a region of uniform magnetic field directed out of the page. Outside the region, the magnetic field is zero. Some rectangular wire loops move as indicated. Which of the loops would feel a magnetic force directed to the left? 3 O Loops 3 and 4 O Loops 1 and 2 O Loops 2 and 4 O Loops 1 and 3 Loops 1 and 4 + 4 2 10