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lapo4ka [179]
3 years ago
7

I need help plzz help I’ll mark you brainliest

Physics
1 answer:
abruzzese [7]3 years ago
7 0

Answer:

a b c d

Explanation:

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A coiled telephone cord forms a spiral with 90.0 turns, a diameter of 1.30 cm, and an unstretched length of 57.0 cm. Determine t
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Answer:

2.36 μ H

Explanation:

Given,

Number of turns= 90

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unscratched length = 57 cm  = 0.57 m

Area, A = π r²

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 we know,

   L = \dfrac{\mu_0N^2A}{l}

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    L = 2.36 μ H

Hence, the inductance of the unstretched cord is equal to 2.36 μ H

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