A square coil with side 25 cm and 85 turns rotates at 3600 rev/min in a uniform magnetic field of magnitude 0.65 T. The coil is connected to a 1.0 kW resistor. Determine the power dissipated by the resistor as a function of time. Be sure to derive an expression is symbolic form first before plugging values.
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- A rectangular conducting loop has sides a = 0.065 m, sides b = 0.15 m, and resistance R = 55 Ω. It moves into a magnetic field of magnitude B = 0.81 T with speed v = 5.5 m/s. Refer to the diagram. A) Find the current, Ii, in amperes, flowing in the loop as it enters the magnetic field. B) Find the current, If, in amperes, in the loop as it leaves the magnetic field. It leaves at the same speed it enters.The problem below explores the basic principle behind electric motors, which we will discuss in class in detail. A rectangular loop of wire consists of 163 closely wound turns. The height of the coil is H=7.76m and the width of the coil is W=7.69m. A current of I=6.62A flows through the coil as indicated. One of the sides of the coil is attached to a vertical hinge and free to rotate around the z axis. A magnetic field of 5.03T is applied horizontally at 30 degree angle to the plane of the coil. What is the size of the torque acting on the coil in N.m?The figure below shows a top view of a bar that can slide on two frictionless rails. The resistor is R = 5.40 , and a 2.50-T magnetic field is directed perpendicularly downward, into the page. Let { = 1.20 m. www ****** X ****** X ****** ****** XXXX** xxxxxx XXXX x Bin app (a) Calculate the applied force required to move the bar to the right at a constant speed of 1.90 m/s. N (to the right) (b) At what rate is energy delivered to the resistor? W
- The current to an inductor with 25 windings and a cross sectional area of .025m2 is increased such that the energy stored in the magnetic field increases by a factor of 9. Find the factor by which the current increased. Show the algebraic form of the equation(s) that you apply and report findings with the correct units and number of significant figures.A stationary square coil of area 0.1 m2 is brought over time of 2 s into the magnetic field 8.9 T with its plane perpendicular to the magnetic field. The coil has 1030 turns. Calculate the magnetic flux linkage through the coil. Give your answer in SI units.A cyclotron accelerates charged particles as shown in the figure. The magnetic field contains the particles within the machine while the electric field in the gap accelerates the particles. Since the particles pass through the electric field in both directions, the frequency of the AC source must match the frequency of the particle motion. Calculate the frequency, in megahertz, of the accelerating voltage needed for a proton in a 1.35-T field.
- A dc generator is rated at 20 kW, 250 V, and 80 A when it rotates at 1500 rpm. The resistance of the armature windings is 0.34 2. Part A Calculate the "no-load" voltage at 1500 rpm (when there is no circuit hooked up to the generator). Express your answer using two significant figures. V ΑΣΦ Val = 0 ? kV Review | ConstantsA planar coil of wire has a single turn. The normal to this coil is parallel to a uniform and constant (in time) magnetic field of 1.80 T. An emf that has a magnitude of 2.40 V is induced in this coil because the coil's area A is shrinking. What is the magnitude of AA/At, which is the rate (in m²/s) at which the area changes? Number i UnitsR OF е Fapp Figure P20.18 2003 Thomson Brooks Cole (c20p18) Consider the arrangement shown in Figure P20.18. Assume that R = 7.00 £2 and I = 1.00 m, and that a uniform 1.60-T magnetic field is directed into the page. At what speed should the bar be moved to produce a current of 0.400-A in the resistor?
- A homogeneous field of magnetic induction B is perpendicular to a track of gauge ℓ which is inclined at an angle α to the horizontal. A frictionless conducting rod of mass m straddles the two rails of the track as shown in the figure.a) If the circuit formed by the rod and the track is closed by a resistor of resistance R, after a while the rod slides with constant speed v down the track. Find this velocity v.b) If the resistor is replaced by a capacitor of capacitance C, the rod moves with constant acceleration a when it is released from rest. Find the acceleration a.The figure represents a thin conducting loop placed in a uniform magnetic field directed perpendicular to the plane of the paper and inwards. Some of the following questions pertain to it. (Select True or False). False v The size of the voltage induced in a coil through which a magnet moves is affected by the rate at which the magnet moves. The size of the voltage induced in a coil through which a magnet moves is affected by the strength of the magnet. True False vA current carrying conductor passes through the centre of a metal ring in a direction perpendicular to its plane. If the current flowing through the conductor increases, no emf is induced in the ring. True v An emf is induced in a long, but not infinite, solenoid by a bar magnet that moves inside it along the solenoid axis. True v In Faraday's Law of induction, the induced emf is independent of the resistance in the coil or circuit. True v If the magnitude of the magnetic field starts decreasing, the resultant induced current…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.