Maximum current and Electric field in wire

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To find the maximum current and electric field in the wire connecting two charged plates, first calculate the charge on the plates, which is +/-12.5 nC. The current can be derived using the formula B = μ₀I/(2πr), where B is the magnetic field, I is the current, and r is the radius of the wire. The electric field (E) in the wire can be determined using E = V/d, where V is the voltage across the plates and d is the distance between them. The voltage can be calculated from the charge and capacitance of the plates. Understanding these relationships will help in determining the maximum current and electric field in the wire.
leggomaeggo
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Please someone help me, i posted here before and got no reply :(

How do you find the maximum current and the largest electric field in the wire for the bottom question?

Two 10-cm-diameter metal plates are 1.0 cm apart. They are charged to +/-12.5 nC. They are suddenly connected together by a 0.224-mm-diameter copper wire stretched taut from the center of one plate to the center of the other.
 
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B = \muoI/2\pir

B is magnetic field, I is current, r is radius of the magnetic field(i think), and \mu0 is equal to 4\pi x 10-7

Those pi's aren't superscripted, it is just being difficult.
 

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