4. A piece of copper wireoriented parallel to the normal to the loop, and it increases from 0 to 0.6 T in a time of 0.45 s. Thewire has resistance per unit length 3.3 x 102/m.formed into a single circular loop of radius 12 cm. A magnetic field isа.What is the total resistance of the wire?What is the change in magnetic flux through this wire loop?What is the induced emf in that loop?What is the current induced in that loop?b.С.d.

Given: r=0.12m, B1=0T, B2=0.6T, t=0.45s, RL=3.3×10-2Ω/m (a) The length of the wire is equal to the…

Answered: 4. A piece of copper wire is formed…

Similar questions

Two coils are connected to different power supplies. Each coil carries a current of 0.15 A. Coil A has 300 turns of wire. Coil B has 400 turns of wire. Which of these statements is correct? Select one: a. Coil B produces a larger magnetic field because it has more resistance. b. Coil B produces a larger magnetic field because it has more turns. c. Coil A produces a larger magnetic field because it has less resistance. d. Coil A produces a larger magnetic field because it has fewer turns of wire.
QUESTION 23 In generating electricity, a magnet, surrounded by wires connected to the electrical grid, will be made to spin, using wind, a steam turbine, or moving water. Which answer best explains what is happening in the wires during this process. a. The magnet does not need to move, and still has the capability to make electrons move in the wires that surround it. b. An induced voltage and current flow is set up in the wires surrounding a magnet due to changes in magnetic temperature. c. A magnetic field surrounds the rotating magnet, pushes on the electrons in the wires, thus giving those electrons energy per charge (voltage). d. Light from the magnet is able to push electrons out of the material that makes up the wires. In so doing, the wires are made to have a flowing electrical current.
4. Inductance of a long solenoid: A long thin solenoid has N turns, a length W, area A and a current I. a. What is the magnetic flux through one turn of the solenoid? 6 per turn = BA= b. Determine the inductance L of the solenoid. LI= NO. per turn c. A very long solenoid has 500 turns, a radius of 2 cm and a length of 40 cm and a current of 3A. What is the inductance of the solenoid? d. The coil in an inductor is usually wrapped around an iron core which amplifies the magnetic field. Assume the iron core makes the magnetic field 700 times larger than without the core. What is the inductance of the solenoid in (c) with the iron core? 600 # 212 RCE
20. The image shows a non-constant B-field driving a counter clockwise current in a loop of wire with radius R. For B = et², what is the E-field on the wire at radius R? A. B. C. D. E. tet² R tet² R² tet² R tet2 R² None of the above X X X X X X R X X
A square coil of wire with a side length of 10cm is looped around 10 times. The coil sits in an increasing nagnetic field. The magnetic field increases linearly from 1T to 2T within 5 seconds. A. What is the illustration of this equation?
EC2: A magnet moves through the opening within a closed wire loop, and then comes to rest, relative to the loop. The loop is attached only to a meter that displays the current running through it (and not to any emf device). a. As the magnet is moving relative to the loop, does the meter register a non-zero current? b. When the magnet is at rest relative to the loop, does the meter register a non-zero current? c. What is meant by the statement that magnetism is a "relativistic" effect of electricity?
A small circular coil of 20 loops of wire having a radius of 1 cm is at rest in the X-y plane (so the normal to the loop points in the +z-direction). A uniform magnetic field of 0.5 T is turned on in the +x-direction. What is the magnetic flux through the loop? a. 7.85 x 10 Tm² b. 1.57 x 10 4 T m² O c. 3.14 x 10 3 T m2 O d. 0 T m2
1. A 1000-turn coil of wire 2.0 cm in diameter is in a magnetic field that drops from 0.10 T to 0.0 T in 10 ms. The axis of the coil is parallel to the field. What is the emf of the coil?
Question 1: #65 The 10-cm-wide, zero-resistance wire shown in Figure below, is pushed toward the 2.0 Ω resistor at a steady speed of 0.50 m/s. The magnetic field strength is 0.50 T. a. What is the magnitude of the pushing force? b. How much power does the pushing force supply to the wire? c. What are the direction and magnitude of the induced current? d. How much power is dissipated in the resistor?
9
A cylindrical solenoid that is 40-cm long generates a uniform magnetic field of strength 1.4 T inside the solenoid when the current is 7.0 A. How many turns of a single coil are present in this solenoid? a. 40,000 turns b. 64,000 turns c. 56,000 turns d. 48,000 turns e. 32,000 turns
Two high-current transmission lines carry currents of 45 A and 78 A in the same direction and are suspended parallel to each other 28 cm apart. If the vertical posts supporting these wires divide the lines into straight 16 m segments, what magnetic force does each segment exert on the other? _N. Exponential format with 2 SẺ. QUESTION 14 An induced emf will occur if A. the strength of the magnetic field is changed. B. the coil's area is changed. C. the angle at which the magnetic field and the coil's area meet is changed. D. all of the above.

SEE MORE QUESTIONS