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Iteru [2.4K]
4 years ago
11

One major advantage of alternating current over direct current is that you can use alternating current with a device known as a

Physics
1 answer:
Katarina [22]4 years ago
4 0

Answer:

D) Both alternating and direct current produce magnetic fields, but only

alternating current produces changing magnetic fields

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Answer:

option E

Explanation:

given,

I is moment of inertia about an axis tangent to its surface.

moment of inertia about the center of mass

I_{CM} = \dfrac{2}{5}mR^2.....(1)

now, moment of inertia about tangent

I= \dfrac{2}{5}mR^2 + mR^2

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dividing equation (1)/(2)

\dfrac{I_{CM}}{I}= \dfrac{\dfrac{2}{5}mR^2}{\dfrac{7}{5}mR^2}

\dfrac{I_{CM}}{I}=\dfrac{2}{7}

I_{CM}=\dfrac{2}{7}I

the correct answer is option E

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