Uniform Magnetic Field |

A 450-loop circular armature coil with a diameter of 8.0 cm rotates at in a uniform magnetic field of strengt?

Monday, August 29, 2011

A 450-loop circular armature coil with a diameter of 8.0 cm rotates at in a uniform magnetic field of strength 0.55 T. (a) What is the rms voltage output of the generator? (b) What would you do to the rotation frequency in order to double the rms voltage output?

Confusing physics problem on AC generators…?

Monday, June 27, 2011

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A circular coil enclosing an area of 71.9 cm^2 is made of 110 turns of copper wire. A 9.9 ohm resistor is inserted in the copper wire. Initially, a uniform magnetic field of magnitude 2.18 T points horizontally from left-to-right through the perpendicular plane of the coil. When viewed from the right the coil is [...]

Generators?

Wednesday, June 22, 2011

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450 loop circular armature coil with a diameter of 8cm rotates at 120 rev/s in a uniform magnetic field of strenght 0.55T. What is the rms voltage ouput? what would you do to the rotation frequency in order to double the rms voltage?

Physics, transformers and motors?

Friday, June 10, 2011

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1) A motor has an armature resistance of 4 Ohms. If it draws 8.5 A when running at full speed and connected to a 125 V line, how large is the back emf? 2) An AC generator has 85 rectangular loops on its armature. Each loop is 13 cm long and 7 cm wide. The [...]

Flux, Faraday, Lenz, and Generators?

Sunday, May 8, 2011

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The plane of a conductive loop with an area of 0.042 m2 is perpendicular to a uniform magnetic field of 0.38 T. If the field drops to zero in 0.0044 s, what is the magnitude of the average emf induced in the loop? V

physics laboratory experiment: Electromagnetic Induction

Friday, April 29, 2011

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hi there. i would like to ask help on answering from our laboratory experiment. maybe some of you have done this experiment already? this experiment is on electromagnetic induction. after performing the experiment, we were able to produce a graph of "Average Galvanometer deflection vs length of the Primary Solenoid inside the Secondary Solenoid"? sounds [...]

a square loop side a is mounted on vertical shaft and rotated at angular velocity omega .a uniform magnetic fi?

Thursday, April 28, 2011

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a square loop side a is mounted on vertical shaft and rotated at angular velocity omega .a uniform magnetic field B points to the right .find the emf E(t) for tttthis alternating current generator ?

Hi! Help me please I really appreciate it so much. Thank you?

Sunday, April 3, 2011

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In a model AC generator, a 498 turn rectangular coil 14.0 cm by 21 cm rotates at 124 rev/min in a uniform magnetic field of 0.65 T. (a) What is the maximum emf induced in the coil? ___ V (b) What is the instantaneous value of the emf in the coil at t = (π/30) [...]

The armature of an ac generator is a rectangular coil 2.0 cm by 6.0 cm with 80 turns.?

Tuesday, March 29, 2011

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It is immersed in a uniform magnetic field of magnitude 0.45 T. If the amplitude of the emf in the coil is 17.0 V, at what angular speed is the armature rotating?

What is the minimum rotation rate of the coil so it will produce the required voltage?

Friday, March 18, 2011

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As a new electrical engineer for the local power company, you are assigned the project of designing a generator of sinusoidal ac voltage with a maximum voltage of 120 V. Besides plenty of wire, you have two strong magnets that can produce a constant uniform magnetic field of 1.30 T over a square area with [...]