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If a step-up transformer has a primary coil with 15 turns, how many turns would be required in the secondary coil in order to increase the voltage from 80 volts to 160 volts? A. 8 turns B. 30 turns C. 80 turns D. 160 turns
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Asked 11/18/2014 1:14:40 PM
Updated 3/18/2017 2:19:15 PM
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Flagged by emdjay23 [3/18/2017 2:19:15 PM]
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[object Object]User: If a step-up transformer has a primary coil with 15 turns, how many turns would be required in the secondary coil in order to increase the voltage from 80 volts to 160 volts? A. 8 turns B. 30 turns C. 80 turns D. 160 turns

Weegy: The answer is B. 30 turns
bongche|Points 3864|

User: The electromagnet in a galvanometer A. increases the voltage in a circuit. B. moves a pointer along a numbered scale in response to a current. C. induces an electric current. D. increases the current in a circuit.

Question
Asked 11/18/2014 1:14:40 PM
Updated 3/18/2017 2:19:15 PM
1 Answer/Comment
This conversation has been flagged as incorrect.
Flagged by emdjay23 [3/18/2017 2:19:15 PM]
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The electromagnet in a galvanometer moves a pointer along a numbered scale in response to a current.
Added 3/18/2017 2:19:14 PM
This answer has been confirmed as correct and helpful.
Confirmed by jeifunk [3/18/2017 3:04:52 PM]
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Updated 11/25/2014 7:47:41 PM
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The forces acting on a falling leaf are: Gravity and air resistance.


Added 11/25/2014 7:47:41 PM
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Confirmed by Kaysha [11/25/2014 7:50:39 PM]
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Updated 12/10/2014 10:49:04 AM
1 Answer/Comment
From his observations of cannon drilling, Count Rumford concluded that heat could NOT be a form of: Matter.

Added 12/10/2014 10:49:04 AM
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When droplets of water in the atmosphere act like prisms, the colors in sunlight undergo A. interference. B. absorption. C. polarization. D. dispersion.
Weegy: When droplets of water in the atmosphere act like prisms, the colors in sunlight undergo dispersion. User: To calculate the frequency of an electromagnetic wave, you need to know the speed of the wave and its A. wavelength. B. intensity. C. refraction. D. amplitude. (More)
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Updated 11/18/2014 1:13:20 PM
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o calculate the frequency of an electromagnetic wave, you need to know the speed of the wave and its wavelength.
Added 11/18/2014 1:13:20 PM
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Updated 1/18/2015 4:24:04 PM
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Both A and B. Amplitude is related in: The amount of energy carried by the wave,and the maximum displacement from the rest position.

Added 1/18/2015 3:56:16 PM
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Confirmed by andrewpallarca [1/18/2015 4:23:56 PM]
Speed is the ratio of the distance an object moves to A. the amount of time needed to travel the distance. B. the direction the object moves. C. the displacement of the object. D. the motion of the object.
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