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juin [17]
3 years ago
6

Help me plssssssss cause I’m struggling

Physics
2 answers:
OLEGan [10]3 years ago
8 0
I think it’s c but I am not sure
krok68 [10]3 years ago
5 0

Answer:

I am pretty sure it is C

Explanation:

It can be found all over the universe

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At room temperature what is the strength of the electric field in a 12-gauge copper wire (diameter 2.05 mm that is needed to cau
Dima020 [189]
Electric field strength = resistivity of copper x current density
where
p= 1.72 x 10^-8 <span>ohm meter
diameter = 2.05mm=.00205 m
current = 2.75 A
</span>get first the current density:
current density = current/ cross section area
find the cross section area
cross section area = pi.(d/2)^2;  
cross section = 3.3 006x10-6 m^2
substitute the values 
current density = 2.75A/3.3006x 10-6m^2
current density=35.55 x1 0^2 A/m^2
Electric field stregnth =1.72 x 10^-8 ohm meter x 35.55 x10^2 A/m^2
Electric field stregnth= 46.415 Volts/m

The electric field strength of copper is 46.415 V/m.


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3 years ago
Magnetic field lines surrounding a magnet are conventionally drawn
satela [25.4K]
B) from north to south
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Vlada [557]
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