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ratelena [41]
3 years ago
12

Which of the following statements describes an electric generator?

Physics
2 answers:
belka [17]3 years ago
4 0
An electric generator is when a magnet is rotated through a coil of wire to produce an electric current.
Maru [420]3 years ago
3 0

Answer:

A. A magnet is rotated through a coil of wire to produce an electric current.

Explanation:

An electric generator works on the principle of Faraday's law of induction. As the magnetic flux linked with the coil changes, an emf is induced in the coil and current is produced.

An electric generator converts mechanical energy to electrical energy.

Thus, the correct statement that describes the an electric generator is: A. A magnet is rotated through a coil of wire to produce an electric current.

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The flux is calculated as φ=BAcosθ. The flux is thereforemaximum when the magnetic field vector is perpendicular to theplane of the loop. We may also deduce that the flux is zero whenthere is no component of the magnetic field that is perpendicularto the loop.

when angle is zero then flux is maximium because when angle zerocos is maximium

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3 years ago
A spherical shell has inner radius 1.5 m, outer radius 2.5 m, and mass 850 kg, distributed uniformly throughout the shell. What
Nimfa-mama [501]

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The magnitude of the gravitational force is 4.53 * 10 ^-7 N

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Given that the magnitude of the gravitational force is F = GMm/r²

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