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Tasya [4]
2 years ago
12

What current is needed in the solenoid's wires?

Physics
1 answer:
marta [7]2 years ago
5 0
Using Ampere's Law, the magnetic field produced inside this solenoid is given by
B = uo N I / h
where uo is the vacuum permeability, N is the number of turns in the solenoid and h is the length of the solenoid. Earth's magnetic field is around 50 microteslas in North America thus the current needed in the solenoid is
I = B h / (uo N) = (50 E-6 ) (4) / ((4 pi E-7)(6000) ) = 0.026 A
I = 26 mA
So you need a current of around 26 mA.
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Answer:

Hey mate......

Explanation:

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<h2><em>A. Rotation of Earth</em></h2>

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3 years ago
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A 3 om light bulb and a 6 om light bulb are connected in series, and then hooked up to a battery. Which of the two will shine th
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Answer:

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Explanation:

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3 years ago
Why are satellites placed into orbit at least 150 km above Earth’s surface?
dybincka [34]
Because its just enough to where its not out f the gravitational pull and not close enough to be pulled back to earth. Hope it helps<span />
8 0
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Why is the sky blue?
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4 0
3 years ago
If the charge on the negative plate of the capacitor is 121 nano-Coulomb, how many excess electrons are on that plate? Write you
Julli [10]

Answer:

n = 756.25 giga electrons

Explanation:

It is given that,

If the charge on the negative plate of the capacitor, Q=121\ nC=121\times 10^{-9}\ C

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Q=ne

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n=\dfrac{Q}{e}

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6 0
3 years ago
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