A generator uses a coil that has 117 turns and a 0.517 T magnetic field. The frequency of this generator is 45.0 Hz, and its emf has an rms value of 115 V. Assuming that each turn of the coil is a square (an approximation), determine the length of the wire from which the coil [...]
Continue reading...Thursday, August 12, 2010
I’m trying to find out how many turns of a wire denote the electrical output of a generator. Also, to have 60Hz, I’m assuming that the field needs to be broken 60 times per second? So, a larger number of magnets passing the coil would reduce the speed needed to generate 60 Hz? I’ve looked around [...]
Continue reading...Friday, July 23, 2010
What is the orientation of the armature loop in a simple ac generator when the following is true. Explain your reasoning for each situation, and discuss why they do not occur at the same orientation. (a) the value of the emf is a minimum (b) the value of the magnetic flux is a minimum Hi! this is [...]
Continue reading...Saturday, July 10, 2010
An electric generator consists of a rectangular coil of wire rotating about its longitudinal axis which is perpendicular to a magnetic field of B = 1.60 × 10-2 T. The coil measures 12.00 cm by 21.00 cm and 100.00 turns of wire. The ends of the wire are connected to an external circuit. At what [...]
Continue reading...Friday, July 9, 2010
The drawing shows a plot of the output emf of a generator as a function of time t. The coil of this device has a cross-sectional area per turn of 0.020 m2 and contains 145 turns. A.) Find the frequency f of the generator in hertz B.) the angular speed ω in rad /s C.) and the magnitude [...]
Continue reading...Thursday, July 1, 2010
research work in pogress…
Continue reading...Tuesday, June 1, 2010
A generator uses a coil that has 80 turns and a 0.50 T magnetic field. The frequency of this generator is 60.0 Hz, and its emf has an rms value of 120 V. Assuming that each turn of the coil is a square (an approximation), determine the length of the wire from which the coil [...]
Continue reading...Saturday, May 29, 2010
What is the orientation of the armature loop in a simple ac generator when the following is true. Explain your reasoning for each situation, and discuss why they do not occur at the same orientation. (a) the value of the emf is a minimum (b) the value of the magnetic flux is a minimum
Continue reading...Thursday, May 27, 2010
A generator uses a coil that has 150 turns and a 0.21-T magnetic field. The frequency of this generator is 60.0 Hz, and its emf has an rms value of 120 V. Assuming that each turn of the coil is a square (an approximation), determine the length of the wire from which the coil is [...]
Continue reading...Saturday, May 22, 2010
Question: A generator uses a coil that has 100 turns and a 0.50-T magnetic field. The frequency of this generator is 60.0 Hz, and its emf has an rms value of 120 V. Assuming that each turn of the coil is a square (an approximation), determine the length of the wire from which the coil [...]
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Sunday, August 29, 2010
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