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SpyIntel [72]
3 years ago
6

What is standard unit? Why is it necessary?

Physics
1 answer:
iris [78.8K]3 years ago
4 0

Answer: A unit of measurement which has a fixed value which does not change from person to person or place to place, is called a standard unit of length. It is necessary to have standard units of measurements for the sake of uniformity in measurements.

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When the current in a toroidal solenoid is changing at a rate of 0.0260 A/s, the magnitude of the induced emf is 12.6 mV. When t
andrew11 [14]

Answer:

N= 238 turns

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The induced Emf that goes through a solenoid can be calculated using the below formula;

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ξ= L|dⁱ/dt|

Making L which is the self inductance subject of formula we have

L=ξ/[|dⁱ|*|dt|]

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.0260 A/s

L=NΦB/i

N=ξ/Φ|di|*|dt|

Magnitude of the induced Emf given= 12.6mV then if we convert to volt we have 12.6×10⁻³ V

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Then if we substitute all this Value to equation above we have

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N=238turn

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4 0
4 years ago
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