1. Stick Guy wired his stationary bicycle to an AC generator with a 250-turn coil, and a large ceramic magnet, so his cat can watch Fish TV while he exercises. The 16-cm by 20-cm rectangular coil of the generator rotates at whatever speed Stick Guy pedals. (a) When Stick Guy pedals at a rate of 162 rpm, the rms-average output voltage of the generator is 24 V. What then is the strength of the magnetic field produced by the ceramic magnet? Cat Generator Stick Guy (b) What is the maximum power supplied to the cat's TV, which has a resistance of 8 2, assuming that Stick Guy is pedaling at the same rate as before?

1. Stick Guy wired his stationary bicycle to an AC generator with a 250-turn coil, and a large ceramic magnet, so his cat can watch Fish TV while he exercises. The 16-cm by 20-cm rectangular coil of the generator rotates at whatever speed Stick Guy pedals. (a) When Stick Guy pedals at a rate of 162 rpm, the rms-average output voltage of the generator is 24 V. What then is the strength of the magnetic field produced by the ceramic magnet? Cat Generator Stick Guy (b) What is the maximum power supplied to the cat's TV, which has a resistance of 8 2, assuming that Stick Guy is pedaling at the same rate as before?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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2. The figure below shows a 99-turn square coil rotating about a vertical axis at at ? = 1,520 rev/min. The length of a side of the coil is 20.0 cm. The horizontal component of the Earth's magnetic field at the coil's location is equal to 2.00 ✕ 10−5 T. a) What is the magnitude of the maximum emf (in mV) induced in the coil by the Earth's magnetic field? mV b) What is the orientation of the coil with respect to the magnetic field when the maximum emf occurs? The plane of the coil is oriented 45° with respect to the magnetic field. The plane of the coil is perpendicular to the magnetic field. The plane of the coil is parallel to the magnetic field.
4. A square circuit has 2 m sides and is perpendicular to a uniform magnetic field, with half the area of the loop in the field, as shown. The loop contains a 9 V voltage source. The magnitude of the magnetic field varies with time, with B = 6 + 5t, where B is the field strength in teslas and t is the time in seconds. (a) Determine the value of the induced emf in the circuit. (b) Which way does the overall current flow in the circuit, clockwise or counter-clockwise? Or is the current zero? Explain why your answer is correct.
2. An AC generator has 75 rectangular loops on its armature. Each loop is 14.0 cm long and 10.0 cm wide. The armature rotates at 1300 rpm about an axis parallel to the long side. If the loop rotates in a uniform magnetic field of 0.700 T, which is perpendicular to the axis of rotation, what will be the maximum output voltage of this generator? Volts
5. A circular coil with a radius of 5 cm is made up of 30 loops. Its orientation makes the magnetic field lines normal to the area of the coil. If the magnetic field is varied from 0.25 T to 0.45 T in 1 hour, what is the average induced EMF in the coil?
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4. In the middle of the selenoid with a diameter of D = 2 cm, length L= 20 cm and consisting of N1 = 1200 turns there is a small coil with a diameter of d = 1 cm. The length of this small coil is l= 2 cm and consists of N2 = 50 turns a. Calculate the mutual inductance between the coils. b. If the current in the şelenoid changes at a rate of 0.5 A / s, calculate the emf induced ɛ on the small coil.
1. A flat circular coil with 95 turns, a radius of 4.20 × 10−² m, and a resistance of 0.430 is exposed to an external magnetic field that is directed perpendicular to the plane of the coil. The magnitude of the external magnetic field is changing at a rate of AB/At = 0.787 T/s. Find the induced current in the coil. A