What is the magnitude of the average emf E induced as the coil is rotated? Learning Goal: To apply Problem-Solving Strategy 21.1 Faraday's law. Express your answer in volts to three significant figures. • View Available Hint(s) A closely wound rectangular coil of 80 turns has dimensions 25.0 cm by 40.0 cm. The plane of the coil is rotated from a position in which it makes an angle of 37.0 degrees with a magnetic field of 1.10 T to a position perpendicular to the field. The rotation takes 0.0600 s. What is the average emf Ɛ induced in the coil? ? E = V

What is the magnitude of the average emf E induced as the coil is rotated? Learning Goal: To apply Problem-Solving Strategy 21.1 Faraday's law. Express your answer in volts to three significant figures. • View Available Hint(s) A closely wound rectangular coil of 80 turns has dimensions 25.0 cm by 40.0 cm. The plane of the coil is rotated from a position in which it makes an angle of 37.0 degrees with a magnetic field of 1.10 T to a position perpendicular to the field. The rotation takes 0.0600 s. What is the average emf Ɛ induced in the coil? ? E = V

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter23: Electromagnetic Induction, Ac Circuits, And Electrical Technologies

Section: Chapter Questions

Problem 2CQ: When a magnet is thrust into a coil as in Figure 23.4(a), what is the direction of the louse exerted...

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How do the multiple-loop coils and iron ring in the version of Faraday's apparatus shown in Figure 23.3 enhance the observation of induced emf?
Inductive charging is used to wirelessly charge electronic devices ranging front toothbrushes to cell phones. Suppose the base unit of an inductive charger produces a 1.00 103-T magnetic Held. Varying this magnetic Held magnitude changes the flux through a 15.0-turn circular loop in the device, creating an emf that charges its battery. Suppose the loop area is 3.00 104 m2 and the induced emf has an average magnitude of 5.00 V. Calculate the time required for the magnetic field to decrease to zero from its maximum value.
When a magnet is thrust into a coil as in Figure 23.4(a), what is the direction of the louse exerted by the coil on the magnet? Draw a diagram showing the direction of the current induced in the coil and the magnetic field it produces, to justify your response. How does the magnitude of the force depend on the resistance of the galvanometer?
Medical devices implanted inside the body are often powered using transcutaneous energy transfer (TET), a type of wireless charging using a pair of closely spaced coils. An emf is generated around a coil inside the body by varying the current through a nearby coil outside the body, producing a changing magnetic flux. Calculate the average induced emf if each 10-turn coil has a radius of 1.50 cm and the current in the external coil varies from its maximum value of 10.0 A to zero in 6.25 106 s. (Hint: Recall from Topic 19 that the magnetic field at the center of the current-carrying external coil is B=N0I2R. Assume this magnetic field is constant and oriented perpendicular to the internal coil.)
The figures below show two different situations where a current may be induced in a loop according to Faraday's Law, with the direction given by Lenz' Law. The magnetic field is shown by the x's in Fig. 2. Select true or false for the current in the loop. (The compass directions are defined in the usual way.) PLS REFER TO PICTURE FOR ANSWERS
4. A circular loop of wire is in a region of spatially uniform magneticfield, as shown. The magnetic field is directed into the plane of thefigure. Determine the direction (clockwise or counterclockwise) ofthe induced current in the loop when (a) B is increasing: (b) B isdecreasing; (c) B is constant with value. Explain thoroughly.
A 500-turns square wire coil rotates about a vertical axis at 2690 rev per min as in FIGURE 5. The side of the square wire is 3.3 m each. The horizontal component of the Earth's magnetic field at the location of the loop is 37 µT. i) Calculate the maximum emf induced in the coil by the Earth's magnetic field ii) Find the time for the coil to make 3 complete rotations iii)Sketch a graph of emf against time.
1. Using the dip needle readings shown, calculate the horizontal component of the Earth’s magnetic induction, B, as shown in your lab manual. The totalmagnetic induction in Los Angeles, CA is B = 48.568 mT.
Complete solution An air-core circular coil has 6000 turns. The inner and outer diameters are 20 m and 24 cm respectively. If the current 5A is passed through the coil determine the flux density inside the coil. Express your answer in mT.
What factors affect the magnitude of the induced emf and the magnitude and direction of the induced current? Support your answer using Faraday’s law of electromagnetic induction.
I need help with this problem: 6.- In a magnetic field of 3T, a soneloid of 135 turns with an area of 50 cm^2 is placed. Calculate the induced EMF when the field is reduced to 1.5 T in 0.030 seconds. I would very grateful for you help :)):